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(a-b)³×(a-b)²=?(x-y)×(y-x)³=?
人气:224 ℃ 时间:2020-06-28 23:05:08
解答
(a-b)³×(a-b)²
=(a-b)^5
(x-y)×(y-x)³
=(x-y)×(-(x-y)³)
=-(x-y)^4
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