{"id":4690,"date":"2022-03-07T21:28:50","date_gmt":"2022-03-07T12:28:50","guid":{"rendered":"https:\/\/hatsudy.com\/jp\/?p=4690"},"modified":"2022-07-20T12:41:22","modified_gmt":"2022-07-20T03:41:22","slug":"factor2","status":"publish","type":"post","link":"https:\/\/hatsudy.com\/jp\/factor2.html","title":{"rendered":"\u9ad8\u6821\u6570\u5b66\u306e\u5f0f\u306e\u5c55\u958b\u3068\u56e0\u6570\u5206\u89e3\uff1a\u305f\u3059\u304d\u639b\u3051\u30683\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3"},"content":{"rendered":"\n<p>\u9ad8\u6821\u6570\u5b66\u306a\u3069\u3001\u9ad8\u5ea6\u306a\u8a08\u7b97\u3067\u306f\u6587\u5b57\u3092\u4f7f\u3044\u307e\u3059\u3002\u6587\u5b57\u306e\u8a08\u7b97\u3067\u306f\u5f0f\u306e\u5c55\u958b\u3092\u3057\u305f\u308a\u3001\u56e0\u6570\u5206\u89e3\u3092\u3057\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n<p>\u4e57\u6cd5\u516c\u5f0f\u3068\u5206\u914d\u6cd5\u5247\u3092\u7406\u89e3\u3057\u3066\u3044\u308c\u3070\u3001\u5f0f\u306e\u5c55\u958b\u306f\u96e3\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u4e00\u65b9\u3001\u56e0\u6570\u5206\u89e3\u306f\u516c\u5f0f\u3092\u7406\u89e3\u3057\u3066\u3044\u3066\u3082\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002\u56e0\u6570\u5206\u89e3\u306b\u306f\u89e3\u304d\u65b9\u304c\u3042\u308a\u307e\u3059\u3002\u554f\u984c\u3092\u307f\u308b\u3068\u540c\u6642\u306b\u89e3\u304d\u65b9\u3092\u601d\u3044\u6d6e\u304b\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u308c\u3070\u3001\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u9ad8\u6821\u6570\u5b66\u3067\u306f\u305f\u3059\u304d\u639b\u3051\u30843\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3\uff08\u307e\u305f\u306f3\u6b21\u5f0f\u306e\u5c55\u958b\uff09\u3092\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u52a0\u3048\u3066\u3001\u9ad8\u5ea6\u306a\u56e0\u6570\u5206\u89e3\u306e\u624b\u9806\u3092\u5b66\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u305d\u3053\u3067\u5f0f\u306e\u5c55\u958b\u3084\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3068\u304d\u3001\u3069\u306e\u3088\u3046\u306b\u554f\u984c\u3092\u89e3\u3051\u3070\u3044\u3044\u306e\u304b\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>\u5358\u9805\u5f0f\u3068\u591a\u9805\u5f0f\uff1a\u6b21\u6570\u3068\u4fc2\u6570<\/h2>\n<p>\u5f0f\u306e\u5c55\u958b\u3084\u56e0\u6570\u5206\u89e3\u3092\u5b66\u3076\u524d\u306b\u3001\u5358\u9805\u5f0f\u3068\u591a\u9805\u5f0f\u3001\u307e\u305f\u6b21\u6570\u3068\u4fc2\u6570\u306b\u3064\u3044\u3066\u304a\u3055\u3089\u3044\u3057\u307e\u3057\u3087\u3046\u3002\u5f0f\u306e\u5c55\u958b\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u5358\u9805\u5f0f\u3068\u306f\u3001\u6587\u5b57\u3060\u3051\u306e\u5f0f\u3092\u6307\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u304b\u3051\u7b97\u3060\u3051\u306e\u5f0f\u304c\u5358\u9805\u5f0f\u3068\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002\u4e00\u65b9\u3067\u591a\u9805\u5f0f\u3068\u306f\u3001\u305f\u3057\u7b97\u3068\u5f15\u304d\u7b97\u306b\u3088\u3063\u3066\u8907\u6570\u306e\u5358\u9805\u5f0f\u304c\u5b58\u5728\u3059\u308b\u5f0f\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte3.jpg\" alt=\"\" width=\"600\" height=\"157\" class=\"aligncenter size-full wp-image-4692\" \/><\/p>\n<p>\u307e\u305f\u5358\u9805\u5f0f\u306b\u7740\u76ee\u3059\u308b\u3068\u304d\u3001\u9805\u3068\u4fc2\u6570\u3001\u6b21\u6570\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte7.jpg\" alt=\"\" width=\"600\" height=\"128\" class=\"aligncenter size-full wp-image-4693\" \/><\/p>\n<p>\u4f8b\u3048\u3070\u5358\u9805\u5f0f\u3068\u3057\u3066\\(3x^2\\)\u304c\u3042\u308b\u3068\u304d\u3001\\(3x^2\\)\u3092\u9805\u3068\u3044\u3044\u307e\u3059\u3002\u307e\u305f\u4fc2\u6570\u306f3\u3067\u3042\u308a\u3001\u6b21\u6570\u306f2\u3067\u3059\u3002\u4ed6\u306b\u306f\u3001\u4f8b\u3048\u3070\u5358\u9805\u5f0f\u3068\u3057\u3066\\(2a^3\\)\u304c\u3042\u308b\u3068\u304d\u3001\\(2a^3\\)\u304c\u9805\u3067\u3059\u3002\u307e\u305f\u4fc2\u6570\u306f2\u3067\u3042\u308a\u3001\u6b21\u6570\u306f3\u3067\u3059\u3002<\/p>\n<p>\u6570\u5b66\u306e\u554f\u984c\u3092\u89e3\u304f\u3068\u304d\u3001\u3053\u308c\u3089\u306e\u540d\u524d\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5206\u914d\u6cd5\u5247\u3092\u5229\u7528\u3057\u3001\u304b\u3063\u3053\u3092\u5916\u305b\u308b<\/h3>\n<p>\u307e\u305f\u5f0f\u306e\u5c55\u958b\u3084\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3068\u304d\u3001<span style=\"color: #ff0000;\">\u5206\u914d\u6cd5\u5247<\/span>\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u304b\u3063\u3053\u3092\u5916\u3059\u305f\u3081\u306e\u8003\u3048\u65b9\u304c\u5206\u914d\u6cd5\u5247\u3067\u3059\u3002\u4ee5\u524d\u306b\u56e0\u6570\u5206\u89e3\u3092\u5b66\u3093\u3067\u3044\u308b\u5834\u5408\u3001\u5206\u914d\u6cd5\u5247\u306b\u3064\u3044\u3066\u306f\u65e2\u306b\u7406\u89e3\u3057\u3066\u3044\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u5206\u914d\u6cd5\u5247\u3092\u5229\u7528\u3057\u3066\u304b\u3063\u3053\u3092\u5916\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/wth3.jpg\" alt=\"\" width=\"600\" height=\"157\" class=\"aligncenter size-full wp-image-4694\" \/><\/p>\n<p>\u305f\u3060\u9ad8\u5ea6\u306a\u6570\u5b66\u3067\u306f\u3001\u8a08\u7b97\u304c\u3088\u308a\u8907\u96d1\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u5f0f\u3092\u5c55\u958b\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<ul>\n<li>\\((2x^2+x+3)(x^2+3x+4)\\)<\/li>\n<\/ul>\n<p>\u304b\u3063\u3053\u306e\u4e2d\u306b\u3042\u308b\u5358\u9805\u5f0f\u304c\u591a\u3044\u5834\u5408\u3067\u3042\u3063\u3066\u3082\u3001\u5206\u914d\u6cd5\u5247\u306b\u3088\u3063\u3066\u5f0f\u3092\u5c55\u958b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u5206\u914d\u6cd5\u5247\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte9.jpg\" alt=\"\" width=\"446\" height=\"299\" class=\"aligncenter size-full wp-image-4695\" \/><\/p>\n<p>\u305d\u306e\u305f\u3081\u5206\u914d\u6cd5\u5247\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5f0f\u3092\u5c55\u958b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\\((2x^2+x+3)(x^2+3x+4)\\)<\/p>\n<p>\\(=2x^2(x^2+3x+4)+x(x^2+3x+4)\\)\\(+3(x^2+3x+4)\\)<\/p>\n<p>\\(=2x^4+6x^3+8x^2+x^3+3x^2+4x\\)\\(+3x^2\\)\\(+9x\\)\\(+12\\)<\/p>\n<p>\\(=2x^4+7x^3+14x^2+13x+12\\)<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u5f0f\u306e\u5c55\u958b\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6587\u5b57\u304c\u540c\u3058\u5834\u5408\u3001\u305d\u308c\u3089\u3092\u5171\u901a\u9805\u3068\u3044\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u8a08\u7b97\u3057\u305f\u5f8c\u3001\u5171\u901a\u9805\u3092\u307e\u3068\u3081\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u7b54\u3048\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u56e0\u6570\u5206\u89e3\u3067\u57fa\u672c\u3068\u306a\u308b\u4e57\u6cd5\u516c\u5f0f<\/h2>\n<p>\u3053\u3053\u307e\u3067\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u56e0\u6570\u5206\u89e3\u3067\u306f\u4e57\u6cd5\u516c\u5f0f\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u56e0\u6570\u5206\u89e3\u306e\u521d\u6b69\u3067\u306f\u3001\u4ee5\u4e0b\u306e4\u3064\u306e\u516c\u5f0f\u3092\u5b66\u3073\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\((x+a)(x+b)=x^2+(a+b)x+ab\\)<\/li>\n<li>\\((x+a)^2=x^2+2ax+a^2\\)<\/li>\n<li>\\((x-a)^2=x^2-2ax+a^2\\)<\/li>\n<li>\\((x+a)(x-a)=x^2-a^2\\)<\/li>\n<\/ul>\n<p>\u9ad8\u6821\u6570\u5b66\u306a\u3069\u3001\u9ad8\u5ea6\u306a\u6570\u5b66\u3067\u306f\u3053\u3053\u306b\u516c\u5f0f\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u4e00\u3064\u306f\u305f\u3059\u304d\u639b\u3051\u3092\u5229\u7528\u3057\u3066\u89e3\u304f\u305f\u3081\u306e\u516c\u5f0f\u3067\u3059\u3002\u3082\u3046\u4e00\u3064\u304c3\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3\uff08\u307e\u305f\u306f\u5f0f\u306e\u5c55\u958b\uff09\u3092\u3059\u308b\u305f\u3081\u306e\u516c\u5f0f\u3067\u3059\u3002<\/p>\n<p>\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u305f\u3059\u304d\u639b\u3051\u3092\u7528\u3044\u308b\u56e0\u6570\u5206\u89e3<\/h3>\n<p>\u56e0\u6570\u5206\u89e3\u306e\u521d\u6b69\u3067\u306f\u30012\u6b21\u5f0f\u306e\u4fc2\u6570\u306f1\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f0f\u306b\u3064\u3044\u3066\u56e0\u6570\u5206\u89e3\u3092\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(x^2+2x+1=(x+1)^2\\)<\/li>\n<\/ul>\n<p>\u4e00\u65b9\u3001\u4ee5\u4e0b\u306e\u5f0f\u306f\u3069\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3059\u308c\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<ul>\n<li>\\(3x^2-4x-4\\)<\/li>\n<\/ul>\n<p>\u3053\u306e\u5834\u5408\u3001\\(3x^2\\)\u306e\u4fc2\u6570\u304c3\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u308c\u307e\u3067\u306e\u65b9\u6cd5\u3067\u306f\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001\u4ee5\u4e0b\u306e\u516c\u5f0f\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\((ax+b)(cx+d)=acx^2\\)\\(+(ad+bc)x\\)\\(+bd\\)<\/li>\n<\/ul>\n<p>\u3053\u306e\u516c\u5f0f\u3092\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<span style=\"color: #0000ff;\">\u91cd\u8981\u306a\u306e\u306f\u3001\u300c2\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3068\u304d\u3001\u4fc2\u6570\u304c1\u4ee5\u5916\u306e\u5834\u5408\u3001\u305f\u3059\u304d\u639b\u3051\u3068\u3044\u3046\u65b9\u6cd5\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u56e0\u6570\u5206\u89e3\u3059\u308b\u300d\u3053\u3068\u3067\u3059\u3002<\/span><\/p>\n<p>\u516c\u5f0f\u3092\u899a\u3048\u306a\u304f\u3066\u3082\u3044\u3044\u7406\u7531\u3068\u3057\u3066\u3001\u305f\u3059\u304d\u639b\u3051\u3068\u3044\u3046\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u516c\u5f0f\u3092\u5229\u7528\u3057\u306a\u304f\u3066\u3082\u56e0\u6570\u5206\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3089\u3067\u3059\u3002\u305f\u3059\u304d\u639b\u3051\u3067\u306f\u3001\u4f55\u306e\u6570\u5b57\u3092\u304b\u3051\u308b\u3068\\(x^2\\)\u306e\u4fc2\u6570\u306b\u306a\u308b\u304b\u3092\u8003\u3048\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4f8b\u3048\u3070\\(\\color{red}{3x^2}-4x-4\\)\u306e\u5834\u5408\u3001\\(x^2\\)\u306e\u4fc2\u6570\u306f3\u3067\u3059\u3002\\(1\u00d73=3\\)\u306a\u306e\u3067\u3001a\u3068c\u306e\u6570\u5b57\u306f1\u307e\u305f\u306f3\u3067\u3059\u3002\u305d\u3053\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b1\u30683\u306e\u6570\u5b57\u3092\u305f\u3066\u306b\u4e26\u3079\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte10.jpg\" alt=\"\" width=\"40\" height=\"126\" class=\"aligncenter size-full wp-image-4696\" \/><\/p>\n<p>\u6b21\u306b\u3001\u6587\u5b57\u306e\u306a\u3044\u9805\u306b\u7740\u76ee\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\\(3x^2-4x\\color{red}{-4}\\)\u306e\u5834\u5408\u3001\u6b21\u306b\u7740\u76ee\u3059\u308b\u306e\u306f-4\u3067\u3059\u3002\u4e00\u822c\u7684\u306a\u56e0\u6570\u5206\u89e3\u3067\u3042\u3063\u3066\u3082\u3001\u6587\u5b57\u306e\u306a\u3044\u9805\u306b\u7740\u76ee\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u56e0\u6570\u5206\u89e3\u3092\u3057\u307e\u3059\u3002\u540c\u3058\u3088\u3046\u306b\u3001\u305f\u3059\u304d\u639b\u3051\u306b\u3064\u3044\u3066\u3082\u6587\u5b57\u306e\u306a\u3044\u9805\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001\u3069\u306e\u3088\u3046\u306a\u6570\u5b57\u3092\u304b\u3051\u308b\u3068-4\u306b\u306a\u308b\u306e\u304b\u3092\u8003\u3048\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u30022\u3064\u306e\u6570\u5b57\u3092\u304b\u3051\u308b\u3053\u3068\u3067-4\u306b\u306a\u308b\u30d1\u30bf\u30fc\u30f3\u306f\u4ee5\u4e0b\u306e4\u3064\u3067\u3059\u3002<\/p>\n<ul>\n<li>\\(1\u00d7-4=-4\\)<\/li>\n<li>\\(-1\u00d74=-4\\)<\/li>\n<li>\\(2\u00d7-2\uff1d-4\\)<\/li>\n<li>\\(-2\u00d72=-4\\)<\/li>\n<\/ul>\n<p>\u3064\u307e\u308a\u3001b\u3068d\u306b\u5165\u308b\u6570\u5b57\u306f4\u30d1\u30bf\u30fc\u30f3\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte11.jpg\" alt=\"\" width=\"600\" height=\"253\" class=\"aligncenter size-full wp-image-4697\" \/><\/p>\n<p>\u3053\u3053\u307e\u3067\u306e\u56e0\u6570\u5206\u89e3\u3067\u306f\u3001\\((ax+b)(cx+d)=acx^2+(ad+bc)x+bd\\)\u306e\u3046\u3061\u3001\\(acx^2\\)\u3068\\(bd\\)\u306b\u7740\u76ee\u3057\u3066\u7b54\u3048\u306e\u5019\u88dc\u3092\u63a2\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u6b21\u306b\u3001\\((ad+bc)x\\)\u306b\u5408\u3046\u6570\u5b57\u3092\u898b\u3064\u3051\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002\u305d\u3053\u30674\u3064\u5019\u88dc\u306e\u3046\u3061\u3001\\(3x^2\\color{red}{-4x}-4\\)\u306b\u306a\u308b\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3067\u304d\u308b\u5019\u88dc\u3092\u9078\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\((ad+bc)x\\)\u306b\u5408\u3046\u6570\u5b57\u3092\u898b\u3064\u3051\u308b\u305f\u3081\u3001\\(a\u00d7d\\)\u3068\\(b\u00d7c\\)\u3092\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u305f\u3059\u304d\u639b\u3051\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u659c\u3081\u306b\u304b\u3051\u7b97\u3092\u3057\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte12.jpg\" alt=\"\" width=\"398\" height=\"109\" class=\"aligncenter size-full wp-image-4698\" \/><\/p>\n<p>\u305d\u306e\u5f8c\u3001\\(ad\\)\u3068\\(bc\\)\u3092\u8db3\u3059\u3053\u3068\u306b\u3088\u3063\u3066\u6700\u9069\u306a\u6570\u5b57\u3092\u5f97\u3089\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u4eca\u56de\u306f\\(3x^2-4x-4\\)\u306e\u56e0\u6570\u5206\u89e3\u3067\u3042\u308b\u305f\u3081\u3001\\(ad\\)\u3068\\(bc\\)\u3092\u8db3\u3057\u3066-4\u306b\u306a\u308b\u5019\u88dc\u3092\u307f\u3064\u3051\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/sdte2.jpg\" alt=\"\" width=\"600\" height=\"258\" class=\"aligncenter size-full wp-image-4699\" \/><\/p>\n<p>\u3053\u3046\u3057\u3066\u4e0a\u56f3\u306e\u3046\u3061\u3001\u53f3\u4e0b\u306e\u5f0f\u3092\u4f7f\u3048\u3070\\(3x^2-4x-4\\)\u3092\u4f5c\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte14.jpg\" alt=\"\" width=\"600\" height=\"86\" class=\"aligncenter size-full wp-image-4700\" \/><\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u56e0\u6570\u5206\u89e3\u3059\u308b\u65b9\u6cd5\u304c\u305f\u3059\u304d\u639b\u3051\u3067\u3059\u3002<\/p>\n<h4>\u5c11\u3057\u8907\u96d1\u306a\u305f\u3059\u304d\u639b\u3051\u306e\u8a08\u7b97<\/h4>\n<p>\u305d\u308c\u3067\u306f\u3001\u6b21\u306b\u5c11\u3057\u8907\u96d1\u306a\u56e0\u6570\u5206\u89e3\u3092\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u5f0f\u3092\u56e0\u6570\u5206\u89e3\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<ul>\n<li>\\(12x^2-x-20\\)<\/li>\n<\/ul>\n<p>\u6700\u521d\u306b\u7740\u76ee\u3059\u308b\u9805\u306f\\(12x^2\\)\u3067\u3059\u30022\u3064\u306e\u6570\u5b57\u3092\u304b\u3051\u306612\u306b\u306a\u308b\u305f\u3081\u306b\u306f\u3001\u3069\u306e\u3088\u3046\u306a\u6570\u5b57\u3092\u5229\u7528\u3059\u308c\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u4ee5\u4e0b\u306e3\u3064\u306e\u5019\u88dc\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(1\u00d712=12\\)<\/li>\n<li>\\(2\u00d76=12\\)<\/li>\n<li>\\(3\u00d74=12\\)<\/li>\n<\/ul>\n<p>\u8907\u6570\u306e\u5019\u88dc\u304c\u3042\u308b\u305f\u3081\u3001\u56e0\u6570\u5206\u89e3\u306f\u8907\u96d1\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3001<span style=\"color: #0000ff;\">\\(1\u00d712=12\\)\u306f\u5229\u7528\u3057\u306a\u304f\u3066\u3082\u3044\u3044\u3068\u4e88\u60f3\u3067\u304d\u307e\u3059\u3002<\/span>\u4eee\u306ba\u3068c\u304c1\u307e\u305f\u306f12\u306e\u5834\u5408\u3001\u305f\u3059\u304d\u639b\u3051\u3092\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\\((ad+bc)\\)\u306e\u6570\u5b57\u304c\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte17.jpg\" alt=\"\" width=\"505\" height=\"168\" class=\"aligncenter size-full wp-image-4701\" \/><\/p>\n<p>\u6700\u3082\u6570\u5b57\u304c\u5c0f\u3055\u304f\u306a\u308b\u7d50\u679c\u3092\u5229\u7528\u3057\u305f\u3068\u3057\u3066\u3082\u3001\\((ad+bc)=-1\\)\u3068\u306a\u308b\u7d50\u679c\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001\\(1\u00d712=12\\)\u306f\u7121\u8996\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u53c2\u8003\u307e\u3067\u306b\u3001\u53cd\u5bfe\u306b\\((ad+bc)=118\\)\u306e\u3088\u3046\u306b\u3001\\(ad\\)\u3068\\(bc\\)\u3092\u8db3\u3057\u3066\u7b54\u3048\u304c\u5927\u304d\u304f\u306a\u308b\u5834\u5408\u3001\\(1\u00d712=12\\)\u3092\u5229\u7528\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002\u3044\u305a\u308c\u306b\u3057\u3066\u3082\u3001\u3053\u306e\u3088\u3046\u306b\u7b54\u3048\u3092\u4e88\u6e2c\u3057\u3066\u305f\u3059\u304d\u639b\u3051\u306e\u7b54\u3048\u3092\u63a2\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u307b\u304b\u306b\u306f\u3001\\(2\u00d76=12\\)\u3092\u542b\u3080\u5f0f\u3082\u7b54\u3048\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u7406\u7531\u3068\u3057\u3066\u306f\u3001\\(x\\)\u306e\u4fc2\u6570\u304c-1\uff08\\(-x\\)\uff09\u3060\u304b\u3089\u3067\u3059\u3002\\((ad+bc)=-1\\)\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\\(a\\)\u3068\\(c\\)\u306e\u4e21\u65b9\u3068\u3082\u5076\u6570\u306e\u5834\u5408\u3001\\((ad+bc)\\)\u306e\u7b54\u3048\u306f\u5076\u6570\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/rtrd6.jpg\" alt=\"\" width=\"482\" height=\"199\" class=\"aligncenter size-full wp-image-4702\" \/><\/p>\n<p>\u305d\u3053\u3067\u3001\\(2\u00d76=12\\)\u3092\u9664\u5916\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\\(12x^2-x-20\\)\u3067\u7740\u76ee\u3059\u308b\u6570\u5b57\u306f-20\u3067\u3059\u3002\u304b\u3051\u3066-20\u306b\u306a\u308b\u6570\u5b57\u306b\u3064\u3044\u3066\u3082\u8907\u6570\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(1\u00d7-20=-20\\)<\/li>\n<li>\\(-1\u00d720=-20\\)<\/li>\n<li>\\(2\u00d7-10=-20\\)<\/li>\n<li>\\(-2\u00d710=-20\\)<\/li>\n<li>\\(4\u00d7-5=-20\\)<\/li>\n<li>\\(-4\u00d75=-20\\)<\/li>\n<\/ul>\n<p>\u305f\u3060\u3001\u3053\u306e\u3046\u3061\\(1\u00d7-20=-20\\)\u306a\u3069\u3001\u5927\u304d\u3044\u6570\u5b57\u3092\u542b\u3080\u5f0f\u306f\u7b54\u3048\u3067\u306f\u306a\u3044\u3068\u4e88\u6e2c\u3067\u304d\u307e\u3059\u3002\u7406\u7531\u3068\u3057\u3066\u306f\u5148\u307b\u3069\u3068\u540c\u3058\u3088\u3046\u306b\u3001\\((ad+bc)=-1\\)\u3068\u306a\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u5927\u304d\u3044\u6570\u5b57\u3092\u5229\u7528\u3059\u308b\u3068\u7b54\u3048\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\\(2\u00d7-10=-20\\)\u3092\u542b\u3080\u5f0f\u3082\u7b54\u3048\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u7406\u7531\u3068\u3057\u3066\u306f\u3001\\((ad+bc)\\)\u306e\u7b54\u3048\u304c\u5947\u6570\u3060\u304b\u3089\u3067\u3059\u3002\\(b\\)\u3068\\(d\\)\u306e\u4e21\u65b9\u3068\u3082\u5076\u6570\u3060\u3068\u3001\\((ad+bc)\\)\u306f\u5fc5\u305a\u5076\u6570\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001<span style=\"color: #0000ff;\">\u5019\u88dc\u304c\u591a\u3044\u5834\u5408\u306f\u300c\u3069\u306e\u3088\u3046\u306a\u7b54\u3048\u306b\u306a\u308c\u3070\u3044\u3044\u306e\u304b\u300d\u3092\u4e88\u6e2c\u3057\u3066\u5019\u88dc\u3092\u3057\u307c\u3063\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<p>\u8907\u96d1\u306a\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u3067\u306f\u3001\u305f\u3059\u304d\u639b\u3051\u3092\u5229\u7528\u3059\u308b\u3068\u304d\u306b\u7b54\u3048\u306e\u4e88\u60f3\u3092\u3057\u307e\u3057\u3087\u3046\u3002\u7b54\u3048\u3068\u306a\u308b\u5019\u88dc\u304c\u3044\u304f\u3064\u3082\u3042\u308b\u305f\u3081\u3001\u3059\u3079\u3066\u306b\u3064\u3044\u3066\u305f\u3059\u304d\u639b\u3051\u3092\u3057\u3066\u3044\u308b\u3068\u591a\u304f\u306e\u6642\u9593\u3092\u53d6\u3089\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u7b54\u3048\u3092\u4e88\u6e2c\u3059\u308b\u3053\u3068\u3067\u8a08\u7b97\u6642\u9593\u3092\u77ed\u304f\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u3053\u307e\u3067\u306e\u5185\u5bb9\u3092\u307e\u3068\u3081\u308b\u3068\u3001a\u3068c\u3067\u5229\u7528\u3059\u308b\u6570\u5b57\u3068\u3057\u3066\u306f\\(3\u00d74=12\\)\u3067\u3059\u3002\u307e\u305fb\u3068d\u3067\u5229\u7528\u3059\u308b\u6570\u5b57\u306f\\(4\u00d7-5=-20\\)\u307e\u305f\u306f\\(-4\u00d75=-20\\)\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u5019\u88dc\u306e\u3046\u3061\u3001\u3069\u308c\u304c\u6700\u9069\u306a\u306e\u304b\u3092\u4e00\u77ac\u3067\u898b\u5206\u3051\u308b\u306e\u306f\u7121\u7406\u3067\u3059\u3002\u305d\u3053\u3067\u6570\u5b57\u3092\u4ee3\u5165\u3057\u3001\u305f\u3059\u304d\u639b\u3051\u3092\u5229\u7528\u3057\u3066\u7b54\u3048\u3092\u63a2\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u305d\u3046\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u7b54\u3048\u3092\u307f\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(12x^2-x-20=(3x-4)(4x+5)\\)<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/sdte3.jpg\" alt=\"\" width=\"367\" height=\"166\" class=\"aligncenter size-full wp-image-4703\" \/><\/p>\n<p>\u306a\u304a\u3053\u306e\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3068\u304d\u3001\u591a\u304f\u306e\u4eba\u306f\\(4\u00d7-5=-20\\)\u3068\\(-4\u00d75=-20\\)\u306e\u3046\u3061\u3001\u3069\u3061\u3089\u3092\u7b54\u3048\u306b\u3059\u308c\u3070\u3044\u3044\u306e\u304b\u8ff7\u3044\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2022\/03\/yte19.jpg\" alt=\"\" width=\"480\" height=\"110\" class=\"aligncenter size-full wp-image-4704\" \/><\/p>\n<p>\u305d\u3053\u3067\u3001\u3069\u3061\u3089\u306e\u8a08\u7b97\u304c\\((ad+bc)=-1\\)\u3092\u6e80\u305f\u3059\u306e\u304b\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308b\u3068\u3001\u6b63\u3057\u3044\u7b54\u3048\u3092\u51fa\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u516c\u5f0f\u3092\u5229\u7528\u3059\u308b3\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3<\/h3>\n<p>\u6b21\u306b3\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002\u5148\u307b\u3069\u3001\u305f\u3059\u304d\u639b\u3051\u306e\u516c\u5f0f\u3092\u899a\u3048\u308b\u5fc5\u8981\u306f\u306a\u3044\u3068\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u516c\u5f0f\u3067\u306f\u306a\u304f\u3001\u305f\u3059\u304d\u639b\u3051\u306e\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308c\u3070\u3044\u3044\u304b\u3089\u3067\u3059\u3002\u4e00\u65b9\u3001<span style=\"color: #0000ff;\">3\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u306b\u3064\u3044\u3066\u306f\u3001\u516c\u5f0f\u3092\u899a\u3048\u3066\u3044\u306a\u3051\u308c\u3070\u89e3\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/span><\/p>\n<p>\u305d\u3053\u3067\u3001\u4ee5\u4e0b\u306e\u516c\u5f0f\u3092\u899a\u3048\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\\(a^3+b^3=(a+b)(a^2-ab+b^2)\\)<\/li>\n<li>\\(a^3-b^3=(a-b)(a^2+ab+b^2)\\)<\/li>\n<li>\\(a^3+3a^2b+3ab^2+b^3=(a+b)^3\\)<\/li>\n<li>\\(a^3-3a^2b+3ab^2-b^3=(a-b)^3\\)<\/li>\n<\/ul>\n<p>\u203b3\u6b21\u5f0f\u306e\u516c\u5f0f\u306f\u6570\u2161\u306e\u5185\u5bb9\u3067\u3042\u308b\u3082\u306e\u306e\u3001\u554f\u984c\u3092\u89e3\u3051\u308b\u304b\u3069\u3046\u304b\u306f\u300c\u516c\u5f0f\u3092\u899a\u3048\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u300d\u3060\u3051\u306a\u306e\u3067\u3001\u3053\u3053\u3067\u899a\u3048\u3066\u3057\u307e\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u516c\u5f0f\u3092\u7406\u89e3\u3057\u3066\u3044\u308c\u3070\u30013\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u3092\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\\(27x^3-8\\)<\/li>\n<\/ul>\n<p>\u3053\u306e\u5f0f\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5909\u5f62\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(27x^3-8=(3x)^3-2^3\\)<\/li>\n<\/ul>\n<p>\u305d\u306e\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(27x^3-8=(3x-2)(9x^2+6x+4)\\)<\/li>\n<\/ul>\n<h2>\u56e0\u6570\u5206\u89e3\u3092\u884c\u3046\u624b\u9806<\/h2>\n<p>\u3053\u3053\u307e\u3067\u306e\u5185\u5bb9\u306f\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u3068\u304d\u306e\u57fa\u672c\u7684\u306a\u77e5\u8b58\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u591a\u304f\u306e\u5834\u5408\u3001\u57fa\u790e\u77e5\u8b58\u3060\u3051\u3067\u56e0\u6570\u5206\u89e3\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001\u9ad8\u5ea6\u306a\u56e0\u6570\u5206\u89e3\u3092\u3059\u308b\u305f\u3081\u306e\u624b\u9806\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u56e0\u6570\u5206\u89e3\u306e\u554f\u984c\u3092\u89e3\u304f\u3068\u304d\u3001\u4ee5\u4e0b\u306b\u3088\u3063\u3066\u8a08\u7b97\u3067\u304d\u306a\u3044\u304b\u8003\u3048\u308b\u3068\u3044\u3044\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u5171\u901a\u56e0\u6570\u3092\u63a2\u3059<\/li>\n<li>\u6587\u5b57\u304c\u591a\u3044\u5834\u5408\u3001\u6700\u4f4e\u6b21\u6570\u306b\u7740\u76ee\u3057\u3066\u6574\u7406\u3059\u308b<\/li>\n<li>\u8907\u96d1\u306a\u5f0f\u306b\u5bfe\u3057\u3066\u7f6e\u304d\u63db\u3048\u3092\u3059\u308b<\/li>\n<li>\u3055\u3089\u306b\u56e0\u6570\u5206\u89e3\u3067\u304d\u306a\u3044\u304b\u78ba\u8a8d\u3059\u308b<\/li>\n<li>\u56e0\u6570\u5206\u89e3\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u5e73\u65b9\u306e\u5dee\u3092\u5229\u7528\u3059\u308b<\/li>\n<\/ul>\n<p>\u305d\u308c\u305e\u308c\u306e\u65b9\u6cd5\u3092\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5171\u901a\u56e0\u6570\u3092\u63a2\u3059<\/h3>\n<p>\u56e0\u6570\u5206\u89e3\u3067\u6700\u3082\u57fa\u672c\u7684\u306a\u89e3\u304d\u65b9\u304c\u5171\u901a\u56e0\u6570\u3092\u63a2\u3059\u3053\u3068\u3067\u3059\u3002\u540c\u3058\u56e0\u6570\u3092\u898b\u3064\u3051\u305f\u5f8c\u3001\u56e0\u6570\u5206\u89e3\u3092\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u5f0f\u306f\u3069\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3059\u308c\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<ul>\n<li>\\((a-b)^2+ac-bc\\)<\/li>\n<\/ul>\n<p>\u5f0f\u3092\u5909\u5f62\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\((a-b)^2+ac-bc=(a-b)^2+(a-b)c\\)<\/p>\n<p>\u3053\u3046\u3057\u3066\u3001\\((a-b)\\)\u304c\u5171\u901a\u9805\u3067\u3042\u308b\u3068\u308f\u304b\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\\((a-b)^2+ac-bc\\)<\/p>\n<p>\\(=(a-b)^2+(a-b)c\\)<\/p>\n<p>\\(=(a-b)(a-b+c)\\)<\/p>\n<h3>\u6587\u5b57\u304c\u591a\u3044\u5834\u5408\u3001\u6700\u3082\u6b21\u6570\u306e\u4f4e\u3044\u6587\u5b57\u306b\u7740\u76ee\u3057\u3066\u6574\u7406\u3059\u308b<\/h3>\n<p>\u305f\u3060\u5f0f\u306b\u3088\u3063\u3066\u306f\u3001\u591a\u304f\u306e\u6587\u5b57\u3092\u542b\u3080\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u3069\u306e\u3088\u3046\u306b\u5171\u901a\u56e0\u5b50\u3092\u898b\u3064\u3051\u308c\u3070\u3044\u3044\u306e\u304b\u308f\u304b\u308a\u307e\u305b\u3093\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<ul>\n<li>\\(b^2+ab+b-a-2\\)<\/li>\n<\/ul>\n<p>\u3053\u306e\u5834\u5408\u3001\u6700\u3082\u6b21\u6570\u306e\u4f4e\u3044\u6587\u5b57\u306b\u7740\u76ee\u3057\u307e\u3057\u3087\u3046\u3002\u5148\u307b\u3069\u306e\u5f0f\u3067\u306f\u3001\u6b21\u6570\u306e\u4f4e\u3044\u6587\u5b57\u306f\\(a\\)\u3067\u3059\u3002\u5f0f\u306e\u4e2d\u306b\\(b^2\\)\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3082\u306e\u306e\u3001\\(a^2\\)\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001<span style=\"color: #ff0000;\">\\(a\\)\u306b\u7740\u76ee\u3057\u3066\u5f0f\u3092\u6574\u7406\u3057\u307e\u3057\u3087\u3046\u3002<\/span>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(b^2+ab+b-a-2\\)\\(=a(b-1)+b^2+b-2\\)<\/p>\n<p>\u3053\u3046\u3059\u308c\u3070\u3001\u5171\u901a\u56e0\u6570\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u3067\u56e0\u6570\u5206\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(b^2+ab+b-a-2\\)<\/p>\n<p>\\(=a(b-1)+b^2+b-2\\)<\/p>\n<p>\\(=a(b-1)+(b-1)(b+2)\\)<\/p>\n<p>\\(=(b-1)(a+b+2)\\)<\/p>\n<p><strong>\u30fb\u6b21\u6570\u304c\u540c\u3058\u5834\u5408\u306e\u56e0\u6570\u5206\u89e3<\/strong><\/p>\n<p>\u4e00\u65b9\u3001\u6b21\u6570\u304c\u540c\u3058\u5834\u5408\u306f\u3069\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3059\u308c\u3070\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u306e\u5834\u5408\u3001\u4e00\u3064\u306e\u6587\u5b57\u306b\u7740\u76ee\u3057\u3066\u5f0f\u3092\u6574\u7406\u3059\u308b\u3068\u3044\u3044\u3067\u3059\u3002\u4f8b\u3068\u3057\u3066\u4ee5\u4e0b\u306e\u5f0f\u3092\u56e0\u6570\u5206\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\\(a^2(b-c)+b^2(c-a)+c^2(a-b)\\)<\/li>\n<\/ul>\n<p>\u3053\u306e\u5f0f\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u6587\u5b57\u306b\u3064\u3044\u3066\u6700\u9ad8\u6b21\u6570\u306e\u6570\u5b57\u304c\u540c\u3058\u3067\u3059\u3002\u305d\u3053\u3067\u3001\u4e00\u3064\u306e\u6587\u5b57\u306b\u7740\u76ee\u3057\u307e\u3057\u3087\u3046\u3002\u7740\u76ee\u3059\u308b\u6587\u5b57\u306f\\(a\\)\u3067\u3082\u3044\u3044\u3057\u3001\\(b\\)\u3067\u3082\u3044\u3044\u3067\u3059\u3002\\(c\\)\u3092\u5229\u7528\u3057\u3066\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u3053\u3067\u306f\u3001\\(a\\)\u306b\u7740\u76ee\u3057\u3066\u5f0f\u3092\u6574\u7406\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u65b9\u6cd5\u3068\u3057\u3066\u306f<span style=\"color: #0000ff;\">\u5f0f\u3092\u5c55\u958b\u3057\u305f\u5f8c\u3001\\(a\\)\u306b\u7740\u76ee\u3057\u3066\u5f0f\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/span>\u305d\u306e\u5f8c\u3001\u56e0\u6570\u5206\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\(a^2(b-c)+b^2(c-a)+c^2(a-b)\\)<\/p>\n<p>\\(=(b-c)a^2+b^2c-b^2a+c^2a-c^2b\\)<\/p>\n<p>\\(=(b-c)\\color{red}{a^2}-(b^2-c^2)\\color{red}{a}+b^2c-c^2b\\)<\/p>\n<p>\\(=\\color{red}{(b-c)}a^2-(b+c)\\color{red}{(b-c)}a+\\color{red}{(b-c)}bc\\)<\/p>\n<p>\\(=(b-c)\\{a^2-(b+c)a+bc\\}\\)<\/p>\n<p>\\(=(b-c)(a-c)(a-b)\\)<\/p>\n<h3>\u8907\u96d1\u306a\u5f0f\u306b\u5bfe\u3057\u3066\u7f6e\u304d\u63db\u3048\u3092\u3059\u308b<\/h3>\n<p>\u8907\u96d1\u306a\u5f0f\u306b\u3064\u3044\u3066\u3001\u56e0\u6570\u5206\u89e3\u3092\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u6570\u5f0f\u306e\u7f6e\u304d\u304b\u3048\u3092\u3057\u307e\u3057\u3087\u3046\u3002<span style=\"color: #0000ff;\">\u6570\u5f0f\u3092\u4e00\u3064\u306e\u6587\u5b57\u306b\u7f6e\u304d\u304b\u3048\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u8a08\u7b97\u304c\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002<\/span>\u5177\u4f53\u7684\u306b\u306f\u3001\u5171\u901a\u3059\u308b\u5f0f\u3084\u8907\u96d1\u306a\u5f0f\u306b\u3064\u3044\u3066\u306fA\u3084X\u306a\u3069\u306e\u6587\u5b57\u306b\u7f6e\u304d\u304b\u3048\u308b\u3068\u3044\u3044\u3067\u3059\u3002<\/p>\n<p>\u4f8b\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u5f0f\u3092\u56e0\u6570\u5206\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\\((a^2+a+1)(a^2+a+2)-12\\)<\/li>\n<\/ul>\n<p>\u5f0f\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3001\\(a^2+a\\)\u304c\u5171\u901a\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u3001\\(a^2+a=A\\)\u3068\u3057\u307e\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\((a^2+a+1)(a^2+a+2)-12\\)\\(=(A+1)\\)\\((A+2)-12\\)<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u5f0f\u306e\u7f6e\u304d\u304b\u3048\u3092\u3059\u308b\u3068\u3001\u8a08\u7b97\u304c\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\((a^2+a+1)(a^2+a+2)-12\\)<\/p>\n<p>\\(=(A+1)(A+2)-12\\)<\/p>\n<p>\\(=A^2+3A+2-12\\)<\/p>\n<p>\\(=A^2+3A-10\\)<\/p>\n<p>\\(=(A-2)(A+5)\\)<\/p>\n<p>\u306a\u304a\u3001\\(A=a^2+a\\)\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5f0f\u3092\u5909\u3048\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\((A-2)(A+5)\\)<\/p>\n<p>\\(=(a^2+a-2)(a^2+a+5)\\)<\/p>\n<h3>\u3055\u3089\u306b\u56e0\u6570\u5206\u89e3\u3067\u304d\u306a\u3044\u304b\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>\u306a\u304a\u56e0\u6570\u5206\u89e3\u3092\u3057\u305f\u3042\u3068\u3001\u3055\u3089\u306b\u56e0\u6570\u5206\u89e3\u3067\u304d\u306a\u3044\u304b\u78ba\u8a8d\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u5148\u307b\u3069\u306e\u554f\u984c\u3067\u306f\u3001\\(A=a^2+a\\)\u3068\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\\((a^2+a+1)(a^2+1+2)-12\\)\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3057\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>\\((a^2+a-2)(a^2+a+5)\\)<\/li>\n<\/ul>\n<p>\u3057\u304b\u3057\u3001\u3053\u306e\u7b54\u3048\u306f\u8aa4\u308a\u3067\u3059\u3002\u7406\u7531\u3068\u3057\u3066\u306f\u3001\u3055\u3089\u306b\u56e0\u6570\u5206\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3089\u3067\u3059\u3002\u305d\u3053\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u56e0\u6570\u5206\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\((a^2+a-2)(a^2+a+5)\\)<\/p>\n<p>\\(=(a-1)(a+2)(a^2+a+5)\\)<\/p>\n<p>\u3053\u3053\u307e\u3067\u56e0\u6570\u5206\u89e3\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u7b54\u3048\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u56e0\u6570\u5206\u89e3\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u5e73\u65b9\u306e\u5dee\u3092\u5229\u7528\u3059\u308b<\/h3>\n<p>\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u554f\u984c\u6587\u306b\u3042\u308b\u9805\u3092\u5229\u7528\u3059\u308b\u3060\u3051\u3067\u306f\u56e0\u6570\u5206\u89e3\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u5e73\u65b9\u306e\u5dee\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\u3002<span 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