(x+y)チ0ナ5(xチ0ナ5-xy+y)チ0ナ5
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![(x+y)チ0ナ5(xチ0ナ5-xy+y)チ0ナ5](/uploads/image/z/14901143-23-3.jpg?t=%28x%2By%29%26%2365409%3B0%26%2365413%3B5%28x%26%2365409%3B0%26%2365413%3B5-xy%2By%29%26%2365409%3B0%26%2365413%3B5)
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(x+y)チ0ナ5(xチ0ナ5-xy+y)チ0ナ5
(x+y)チ0ナ5(xチ0ナ5-xy+y)チ0ナ5
(x+y)チ0ナ5(xチ0ナ5-xy+y)チ0ナ5
(x+y)平方*(x平方-xy+y)平方
=【(x+y)(x平方-xy+y)】平方
=(x立方+y立方)平方
=x6次方+2x立方y立方+y6次方