{"id":3447,"date":"2025-12-24T17:21:22","date_gmt":"2025-12-24T08:21:22","guid":{"rendered":"https:\/\/math-travel.com\/?p=3447"},"modified":"2026-02-11T17:27:26","modified_gmt":"2026-02-11T08:27:26","slug":"suutoshiki","status":"publish","type":"post","link":"https:\/\/math-travel.jp\/math-1\/suutoshiki\/","title":{"rendered":"\u3010\u6570\u5b66\u2160\u3011\u6570\u3068\u5f0f\u30fb\u91cd\u8981\u4e8b\u9805\u3092\u5b8c\u5168\u653b\u7565\uff01\u5c55\u958b\u30fb\u56e0\u6570\u5206\u89e3\u304b\u3089\u5b9f\u6570\u307e\u3067\u7dcf\u5fa9\u7fd2"},"content":{"rendered":"\n
\u300c\u6570\u3068\u5f0f\u306e\u5358\u5143\u304c\u82e6\u624b\u300d<\/span> \u5f0f\u306e\u5c55\u958b\u3068\u304b\u304c\u82e6\u624b\u3067\u2026<\/p>\n<\/span><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n \u6570\u5b66\u2160\u300c\u6570\u3068\u5f0f\u300d\u306e\u57fa\u790e\u304c\u8a70\u307e\u3063\u305f\u300c\u5b8c\u5168\u653b\u7565\u300d\u8a18\u4e8b\u3092\u66f8\u304d\u307e\u3057\u305f\u3002<\/span><\/p>\n\n\n\n \u300c\u6570\u3068\u5f0f\u300d\u3067\u5b66\u7fd2\u3059\u308b\u5185\u5bb9\u306f\u3053\u308c\u304b\u3089\u7fd2\u3046\u9ad8\u6821\u6570\u5b66\u306e\u57fa\u790e\u3068\u306a\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n \u3055\u3063\u305d\u304f\u306b\u9ad8\u6821\u6570\u5b66\u306b\u82e6\u624b\u610f\u8b58\u3092\u6301\u3063\u3066\u3044\u308b\u65b9\u3082\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u3058\u3063\u304f\u308a\u5411\u304d\u5408\u3063\u3066\u82e6\u624b\u3092\u89e3\u6d88\u3055\u305b\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n \u672c\u8a18\u4e8b\u3067\u306f\u3001\u6570\u5b66\u2160A\u306e\u6570\u3068\u5f0f\u306b\u3064\u3044\u3066\u5fb9\u5e95\u89e3\u8aac<\/span>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n \u9577\u3044\u8a18\u4e8b\u3067\u3059\u304c\u3086\u3063\u304f\u308a\u8aad\u3081\u3070\u6570\u3068\u5f0f\u306e\u7dcf\u5fa9\u7fd2\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n \u307e\u305a\u5358\u9805\u5f0f\u3068\u591a\u9805\u5f0f\u306e\u5b9a\u7fa9\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n \u5358\u9805\u5f0f \u591a\u9805\u5f0f \u3064\u307e\u308a\u3001\u591a\u9805\u5f0f\u306f\u3044\u304f\u3064\u304b\u306e\u5358\u9805\u5f0f\u3092\u3082\u3063\u3066\u3044\u308b\u5f0f<\/span>\u3067\u3059\u3002<\/p>\n\n\n\n \u307e\u305f\u3001\u5358\u9805\u5f0f\u3068\u591a\u9805\u5f0f\u306f\u3069\u3061\u3089\u3082\u6574\u5f0f\u306e1\u3064\u3067\u3059\u3002<\/p>\n\n\n\n \u540c\u3058\u6587\u5b57\u3092\u3082\u3064\u9805\u3092\u540c\u985e\u9805<\/span>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n\n\n \u540c\u985e\u9805\u3092\u307e\u3068\u3081\u308b\u3068\u306f\u300c\u6574\u5f0f\u306e\u540c\u3058\u6587\u5b57\u3092\u6301\u3064\u9805\u30921\u3064\u306b\u307e\u3068\u3081\u308b\u3053\u3068\u300d<\/span>\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n\n\n\n \u6307\u6570\u6cd5\u5247\u3092\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u5f0f\u306e\u5c55\u958b\u306a\u3069\u3067\u82e6\u6226\u3057\u307e\u3059\u3002<\/p>\n\n\n\n \u6307\u6570\u6cd5\u5247\u306b\u306f\u899a\u3048\u3066\u304a\u304d\u305f\u30447\u3064\u306e\u516c\u5f0f<\/span>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n \u306a\u305c\u3053\u306e\u3088\u3046\u306b\u306a\u308b\u306e\u304b\u306f\u5225\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002 \u5c55\u958b\u306e\u516c\u5f0f\u306f\u5b8c\u74a7\u306b\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u81ea\u529b\u3067\u8a08\u7b97\u3067\u304d\u308b\u304f\u3089\u3044\u306b\u306f\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n 3\u6b21\u5f0f\u306e\u5c55\u958b\u516c\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n \\((a+b)^{3}=a^{3}+3a^{2}b+3ab^{2}+b^{3}\\) \u4e0a\u3067\u793a\u3057\u305f\u3088\u3046\u306b\u30013\u4e57\u306e\u5c55\u958b\u306f\u5c11\u3057\u8907\u96d1\u3067\u3059\u3002<\/p>\n\n\n\n \\((a\u00b1b)^{3}\\)\u306e\u5c55\u958b\u516c\u5f0f\u3092\u8a3c\u660e\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n \u8a3c\u660e\u306f\u8a08\u7b97\u3057\u3066\u3044\u304f\u3060\u3051\u306a\u306e\u3067\u304b\u306a\u308a\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002<\/span><\/p>\n\n\n\n \u30fb\\((a+b)^{3}\\)\u306e\u8a3c\u660e<\/p>\n\n\n\n \\begin{eqnarray} \u30fb\\((a-b)^{3}\\)\u306e\u8a3c\u660e<\/p>\n\n\n\n \\begin{eqnarray} \u4e0a\u306e2\u3064\u306e\u5f0f\u306f\u7d20\u76f4\u306b\u5c55\u958b\u3057\u3066\u3044\u304f\u3068\u5c55\u958b\u516c\u5f0f\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n \u6b21\u306f3\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n \u516c\u5f0f\u3092\u898b\u306a\u304c\u3089\u7df4\u7fd2\u3057\u3066\u3044\u3051\u3070\u6bb5\u3005\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n \u5b9f\u6570\u3068\u306f\u300c\u6709\u7406\u6570\u300d\u3068\u300c\u7121\u7406\u6570\u300d\u306e\u7dcf\u79f0<\/span>\u3067\u3059\u3002<\/p>\n\n\n \u591a\u304f\u306e\u9ad8\u6821\u751f\u304c\u300c\u6709\u7406\u6570\u300d\u3068\u300c\u7121\u7406\u6570\u300d\u306e\u9055\u3044\u306b\u56f0\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n \u6709\u7406\u6570\u3068\u3044\u3046\u306e\u306f\u3001\u5206\u6570\u3067\u8868\u73fe\u3067\u304d\u308b\u6570\u3092\u6307\u3057\u3066\u3044\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u300c\u6574\u6570\u300d\u300c\u6709\u9650\u5c0f\u6570\u300d\u300c\u5faa\u74b0\u5c0f\u6570\u300d<\/span>\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059<\/p>\n\n\n \u4e00\u65b9\u3067\u3001\u7121\u7406\u6570\u3068\u306f\\(\\sqrt{3}\\)\u3084\\(\\pi\\)\u306a\u3069\u306e\u5faa\u74b0\u3057\u306a\u3044\u6570\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n \u4e8c\u91cd\u6839\u53f7\u306e\u5916\u3057\u65b9\u3092\u4f1d\u6388\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n \u5916\u3057\u65b9\u6cd5\u306f\u3068\u3063\u3066\u3082\u7c21\u5358\uff01<\/p>\n\n\n\n \u3053\u306e\u516c\u5f0f\u3092\u899a\u3048\u3066\u3044\u308c\u3070\u3001\u554f\u984c\u306a\u3057\u3067\u3059\u3002<\/span><\/p>\n\n\n\n \u547d\u984c\u3068\u306f\u300c\u6b63\u3057\u3044\u304b\u6b63\u3057\u304f\u306a\u3044\u304b\u304c\uff11\u3064\u306b\u5b9a\u307e\u308b\u6587\u7ae0\u307e\u305f\u306f\u5f0f\u300d\u3092\u6307\u3057\u307e\u3059\u3002<\/span><\/p>\n\n\n\n \u4e00\u65b9\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6587\u7ae0\u306f\u547d\u984c\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n\n\n\n \u306a\u305c\u306a\u3089\u3001\u5927\u304d\u3044\u3084\u901f\u3044\u3068\u3044\u3046\u306e\u306f\u6bd4\u3079\u308b\u3082\u306e\u306b\u3088\u3063\u3066\u5909\u308f\u308b\u6982\u5ff5\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n \u3053\u306e\u3088\u3046\u306a\u6b63\u3057\u3044\u6b63\u3057\u304f\u306a\u3044\u304c\u660e\u78ba\u306b\u6c7a\u3081\u3089\u308c\u306a\u3044\u6587\u7ae0\u3084\u5f0f\u3092\u547d\u984c\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n\n\n\n \u307e\u305a\u3001\u5fc5\u8981\u6761\u4ef6\u30fb\u5341\u5206\u6761\u4ef6\u306e\u5b9a\u7fa9\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n p\u3068\u304bq\u3067\u8aac\u660e\u3055\u308c\u3066\u3082\u5206\u304b\u3089\u306a\u3044\u3088<\/p>\n<\/span><\/span><\/span><\/div><\/div><\/div><\/div>\n\n \u305d\u3046\u3060\u3088\u306d\u3002 \u771f\u306e\u547d\u984c\u300c\u30ea\u30f3\u30b4\u306a\u3089\u3070\u679c\u7269\u300d\u3092\u4f8b\u306b\u3057\u3066\u8003\u3048\u307e\u3059\u3002<\/span><\/p>\n\n\n\n \u300c\u30ea\u30f3\u30b4\u306a\u3089\u3070\u679c\u7269\u3067\u3042\u308b<\/span>\u300d\u3068\u3044\u3046\u547d\u984c\u3092\u77e2\u5370\u3067\u8868\u3059\u3068\u300c\u30ea\u30f3\u30b4\u21d2\u679c\u7269<\/span>\u300d\u3067\u3059\u3002<\/p>\n\n\n \u3064\u307e\u308a\u3001\u30ea\u30f3\u30b4\u21d2\u679c\u7269 \u306b\u304a\u3044\u3066<\/p>\n\n\n\n \u3053\u3053\u3067\u6ce8\u610f\u70b9\u304c1\u3064 \u3064\u307e\u308a\u3001\u300c\\(x=1\\)\u300d\u306f\u300c\\(x+3=4\\)\u300d\u306e\u5341\u5206\u6761\u4ef6\u3067\u3082\u3042\u308a\u3001\u5fc5\u8981\u6761\u4ef6\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n\n\n\n \u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3001\u300c\\(x=1\\)\u300d\u306f\u300c\\(x+3=4\\)\u300d\u306e\u5fc5\u8981\u5341\u5206\u6761\u4ef6<\/span>\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n\n\n \u77e2\u5370\u304c\u51fa\u3066\u3044\u308b\u65b9\u304c\u5341\u5206\u6761\u4ef6\u306a\u3093\u3060\u306d<\/p>\n<\/span><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n \u547d\u984c\u306e\u5fc5\u8981\u6761\u4ef6\u30fb\u5341\u5206\u6761\u4ef6\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u65b9 \u4eca\u56de\u306f\u6570\u3068\u5f0f\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n \u6570\u3068\u5f0f\u4ee5\u5916\u306e\u5358\u5143\u306b\u3064\u3044\u3066\u3082\u307e\u3068\u3081\u8a18\u4e8b\u3092\u51fa\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n \u6559\u79d1\u66f8\u306b\u5185\u5bb9\u306b\u6cbf\u3063\u305f\u89e3\u8aac\u8a18\u4e8b\u3092\u6319\u3052\u3066\u3044\u308b\u306e\u3067\u3001\u5b9a\u671f\u8a66\u9a13\u524d\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n \u305d\u308c\u3067\u306f\u6700\u5f8c\u307e\u3067\u3054\u89a7\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n \u307f\u3093\u306a\u306e\u52aa\u529b\u304c\u5831\u308f\u308c\u307e\u3059\u3088\u3046\u306b\uff01<\/p>\n","protected":false},"excerpt":{"rendered":" \u300c\u6570\u3068\u5f0f\u306e\u5358\u5143\u304c\u82e6\u624b\u300d\u300c\u6570\u3068\u5f0f\u306e\u5fa9\u7fd2\u304c\u3057\u305f\u3044\u300d\u4eca\u56de\u306f\u6570\u3068\u5f0f\u306e\u3053\u3093\u306a\u60a9\u307f\u3092\u5168\u90e8\u89e3\u6c7a\u3057\u307e\u3059\u3002 \u6570\u5b66\u2160\u300c\u6570\u3068\u5f0f\u300d\u306e\u57fa\u790e\u304c\u8a70\u307e\u3063\u305f\u300c\u5b8c\u5168\u653b\u7565\u300d\u8a18\u4e8b\u3092\u66f8\u304d\u307e\u3057\u305f\u3002 \u300c\u6570\u3068\u5f0f\u300d\u3067\u5b66\u7fd2\u3059\u308b\u5185\u5bb9\u306f\u3053\u308c\u304b\u3089\u7fd2\u3046\u9ad8\u6821\u6570\u5b66\u306e\u57fa\u790e\u3068\u306a\u308b\u3082\u306e\u3067\u3059 […]<\/p>\n","protected":false},"author":1,"featured_media":6359,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[8,222],"tags":[9,10,11],"class_list":["post-3447","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-suushiki","category-math-1","tag-9","tag-a","tag-11"],"yoast_head":"\n
\u300c\u6570\u3068\u5f0f\u306e\u5fa9\u7fd2\u304c\u3057\u305f\u3044\u300d<\/span>
\u4eca\u56de\u306f\u6570\u3068\u5f0f\u306e\u3053\u3093\u306a\u60a9\u307f\u3092\u5168\u90e8\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\n\n\n
\u9ad8\u6821\u751f<\/span><\/div>\u5358\u9805\u5f0f\u3068\u591a\u9805\u5f0f<\/h2>\n\n\n\n
\u6570\u3084\u6587\u5b57\u304a\u3088\u3073\u305d\u308c\u3089\u3092\u639b\u3051\u305f\u3060\u3051\u3067\u8868\u3055\u308c\u308b\u5f0f
\u4f8b\uff095,xy,2a,(-3abc)<\/p>\n\n\n\n
\u5358\u9805\u5f0f\u306e\u548c\u3068\u3057\u3066\u8868\u3055\u308c\u308b\u5f0f
\u4f8b\uff09x+y ,2ab-3a+b<\/p>\n<\/div><\/div>\n\n\n\n\u540c\u985e\u9805\u3067\u307e\u3068\u3081\u308b<\/h2>\n\n\n\n
<\/figure>\n<\/div>\n\n\n\u6307\u6570\u6cd5\u5247<\/h2>\n\n\n\n
\n
\u21d2\u5206\u6570\u3084\u30de\u30a4\u30ca\u30b9\u306b\u3082\u56f0\u3089\u306a\u3044\u6307\u6570\u6cd5\u5247\u306e7\u3064\u306e\u516c\u5f0f<\/p>\n\n\n\n\u5c55\u958b\u306e\u516c\u5f0f<\/h2>\n\n\n\n
3\u6b21\u5f0f\u306e\u5c55\u958b<\/h3>\n\n\n\n
\\((a-b)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3}\\)<\/p>\n<\/div><\/div>\n\n\n\n(a\u00b1b)3\u4e57\u306e\u5c55\u958b\u516c\u5f0f\u3000\u8a3c\u660e<\/h3>\n\n\n\n
(a+b)^{3}&=&(a+b)^{2}(a+b)\\\\
&=&(a^{2}+2ab+b^{2})(a+b)\\\\
&=&a^{3}+3a^{2}b+3ab^{2}+b^{3}\\\\
\\end{eqnarray}<\/p>\n\n\n\n
(a-b)^{3}&=&(a-b)^{2}(a-b)\\\\
&=&(a^{2}-2ab+b^{2})(a-b)\\\\
&=&a^{3}-3a^{2}b+3ab^{2}-b^{3}\\\\
\\end{eqnarray}<\/p>\n<\/div><\/div>\n\n\n\n3\u6b21\u5f0f\u306e\u56e0\u6570\u5206\u89e3<\/h3>\n\n\n\n
\\((a-b)^3=a^3-3a^2b+3ab^2-b^3\\)
\\((a+b)(a^2-ab+b^2)=a^3+b^3\\)
\\((a-b)(a^2+ab+b^2)=a^3-b^3\\)<\/div>\n\n\n\n\u5b9f\u6570\u3068\u306f<\/h2>\n\n\n\n
<\/figure>\n<\/div>\n\n\n
<\/figure>\n<\/div>\n\n\n2\u91cd\u6839\u53f7\u306e\u8a08\u7b97<\/h2>\n\n\n\n
\u547d\u984c\u3068\u6761\u4ef6<\/h2>\n\n\n\n
\n
\n
\u5fc5\u8981\u6761\u4ef6\u30fb\u5341\u5206\u6761\u4ef6<\/h2>\n\n\n\n
<\/figure>\n<\/div>\n\n
\u9ad8\u6821\u751f<\/span><\/div>
\u30b7\u30fc\u30bf<\/span><\/div>
\u5177\u4f53\u7684\u306a\u547d\u984c\u3067\u89e3\u8aac\u3057\u3066\u3044\u304f\u3088<\/p>\n<\/span><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n
<\/figure>\n<\/div>\n\n\n\n
\n
\u547d\u984c\u304c\u9006\u306b\u306a\u308b\u3068\u5fc5\u8981\u6761\u4ef6\u30fb\u5341\u5206\u6761\u4ef6\u3082\u9006<\/span>\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n\n\n
<\/figure>\n<\/div>\n\n\n
\u9ad8\u6821\u751f<\/span><\/div>
\u5fc5\u8981\u6761\u4ef6\u30fb\u5341\u5206\u6761\u4ef6\u3068\u306f\uff1f\u9055\u3044\u3068\u898b\u5206\u3051\u65b9\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01<\/p>\n\n\n\n\u6570\u3068\u5f0f\u3000\u307e\u3068\u3081<\/h2>\n\n\n\n
\n