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(y-x)(x-y)^3(y-x)^5怎么算
人气:304 ℃ 时间:2020-07-04 03:52:21
解答
(y-x)(x-y)^3(y-x)^5
=(y-x)[-(y-x)^3](y-x)^5
=-(y-x)^(1+3+5)
=-(y-x)^9
=(x-y)^9
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