题目内容
计算:
(x-y)(x2+y2)(x+y).
答案:
解析:
解析:
|
解:原式=[(x+y)(x-y)](x2+y2) =(x2-y2)(x2+y2) =x4-y4 |
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题目内容
计算:
(x-y)(x2+y2)(x+y).
|
解:原式=[(x+y)(x-y)](x2+y2) =(x2-y2)(x2+y2) =x4-y4 |