{"width":"100%","provider_name":"Hatena Blog","url":"https://www.mathbanker.info/entry/2021/03/09/012822","type":"rich","categories":["\u30b3\u30e9\u30e0"],"author_name":"mathbanker","description":"\u78ba\u304b\u4e2d\u5b66\u4e00\u5e74\u751f\u306b\u306a\u3089\u3046\u6574\u5f0f\u306e\u5c55\u958b\u3002\u56e0\u6570\u5206\u89e3\u3068\u9055\u3063\u3066\u3001\u624b\u306e\u904b\u52d5\u7684\u306a\u9818\u57df\u306e\u8a8d\u8b58\u306e\u4eba\u3082\u591a\u3044\u3068\u601d\u3046\u3051\u3069\uff08\u305d\u308c\u306f\u305d\u308c\u3067\u9593\u9055\u3063\u3066\u306a\u3044\u3051\u3069\uff09\u3001\u3061\u3087\u3063\u3068\u3057\u305f\u610f\u8b58\u3092\u6301\u3064\u3060\u3051\u3067\u65e9\u304f\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u5b66\u6821\u3067\u7fd2\u3063\u305f\u3068\u304d\u306f $(a+b)(c+d)=ac+ad+bc+bd$ \u306e\u4e00\u672c\u69cd\u3067\u306e\u6226\u3044\u3070\u304b\u308a\u3060\u3063\u305f\u3002\u3053\u308c\u306f\u3053\u308c\u3067\u3001\u5c55\u958b\u306e\u516c\u5f0f\u304c\u306a\u305c\u6210\u308a\u7acb\u3064\u304b\u3068\u304b\u305d\u306e\u8fba\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306e\u5e8f\u7ae0\u3068\u3057\u3066\u907f\u3051\u3066\u901a\u308c\u306a\u3044\u308f\u3051\u3060\u3051\u3069\u3001\u305f\u3060\u306e\u4f5c\u696d\u306e\u6bb5\u968e\u306b\u306a\u3063\u3066\u304b\u3089\u306f\u3072\u305f\u3059\u3089\u306b\u82e6\u884c\u306b\u9055\u3044\u306a\u3044\u3002 \uff12\u9805\u304b\u3051\u308b\uff12\u9805\u306e\u5c55\u958b\u306e\u3046\u3061\u306f\u307e\u3060\u3044\u3044\u3051\u3069\u3001 $$(x^2+3x+4)(2x-1)$$ \u3068\u304b $$(x-1)(2x+1)(x+2)$$ \u3068\u304b\u306b\u306a\u308b\u3068\u3001\u2026","height":"190","title":"\u6574\u5f0f\u306e\u5c55\u958b\u3092\u8a9e\u308b","version":"1.0","author_url":"https://blog.hatena.ne.jp/mathbanker/","provider_url":"https://hatena.blog","published":"2021-03-09 01:28:22","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.mathbanker.info%2Fentry%2F2021%2F03%2F09%2F012822\" title=\"\u6574\u5f0f\u306e\u5c55\u958b\u3092\u8a9e\u308b - \u6570\u5b66\u304c\u597d\u304d\u306a\u30b5\u30e9\u30ea\u30fc\u30de\u30f3\u306e\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u6570\u5b66\u304c\u597d\u304d\u306a\u30b5\u30e9\u30ea\u30fc\u30de\u30f3\u306e\u30d6\u30ed\u30b0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/m/mathbanker/20210309/20210309003253.jpg","blog_url":"https://www.mathbanker.info/"}