{"version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/m/mathematics-for-universe/20170323/20170323203516.jpg","author_url":"https://blog.hatena.ne.jp/mathematics-for-universe/","blog_url":"https://mathematics-for-universe.hatenablog.com/","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmathematics-for-universe.hatenablog.com%2Fentry%2F2017%2F03%2F23%2F204001\" title=\"\u5c55\u958b\u516c\u5f0f\u3010\u6570\u2160\u3011 - \u5b87\u5b99\u3092\u6b69\u304f\u9ad8\u6821\u6570\u5b66 \u57fa\u790e\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://mathematics-for-universe.hatenablog.com/entry/2017/03/23/204001","author_name":"mathematics-for-universe","title":"\u5c55\u958b\u516c\u5f0f\u3010\u6570\u2160\u3011","categories":["\u6570\u5b66","\u9ad8\u6821\u6570\u5b66"],"provider_url":"https://hatena.blog","height":"190","blog_title":"\u5b87\u5b99\u3092\u6b69\u304f\u9ad8\u6821\u6570\u5b66 \u57fa\u790e","type":"rich","provider_name":"Hatena Blog","published":"2017-03-23 20:40:01","description":"\uff12\u6b21\u5f0f\u306e\u5c55\u958b\u516c\u5f0f \uff12\u6b21\u5f0f\u3067\u306f\u6b21\u306e\u516c\u5f0f\u304c\u6210\u308a\u7acb\u3061\u307e\u3059\u3002 \u3053\u308c\u306f\u5de6\u8fba\u3092\u5206\u914d\u6cd5\u5247\u3067\u5730\u9053\u306b\u5c55\u958b\u3057\u3066\u3044\u304f\u3068\u5c0e\u3051\u307e\u3059\u3002 \u6570\u5b66\u306f\u6697\u8a18\u6559\u79d1\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001 \u3053\u308c\u3082\u5fc5\u305a\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002 \u2780 (a+b)2=a2+2ab+b2 (a-b)2=a2-2ab+b2 \u2781 (a+b)(a-b)=a2-b2 \u2782 (x+a)(x+b)=x2+(a+b)x+ab \u2783 (ax+b)(cx+d)=acx2+(ad+bc)x+bd \u2781\u306a\u3093\u304b\u30ad\u30ec\u30a4\u306a\u306e\u3067\u3088\u304f\u4f7f\u3044\u307e\u3059\uff08\u306a\u3093\u306a\u3089\u3053\u306e\u5f62\u3092\u76ee\u6307\u3057\u305f\u308a\u3082\u3057\u307e\u3059\uff09\u3002 \uff13\u6b21\u5f0f\u306e\u5c55\u958b\u516c\u5f0f \u53b3\u5bc6\u306b\u306f\u6570\u2161\u306e\u7bc4\u56f2\u3067\u3059\u304c\u4e00\u7dd2\u306b\u899a\u3048\u3061\u3083\u3044\u307e\u3057\u3087\u3046\u3002 \u2780 (a+b)(a2-ab+b2)=a3+b3 (a-b\u2026"}