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分解因式:(x+y)3次方(x-y)-(x+y)(x-y)3次方
人气:377 ℃ 时间:2020-04-09 11:47:01
解答
原式=(x+y)(x-y)[(x+y)²-(x-y)²]
=(x+y)(x-y)(x+y+x-y)(x+y-x+y)
=4xy(x+y)(x-y)
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