（x-y)^3*(x-y)^2*(y-x)这道题怎么算（x-y)^3*(x-y)^2*(y-x)看不懂？（x-y)^3乘(x-y)_数学解答 - 作业小助手

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（x-y)^3*(x-y)^2*(y-x)这道题怎么算
（x-y)^3*(x-y)^2*(y-x)看不懂？（x-y)^3乘(x-y)^2乘(y-x)总可以了吧

人气：498 ℃　时间：2020-05-10 03:54:42

解答

(x-y)^3(x-y)^2(y-x)
=(x-y)^(3+2)[-(x-y)]
=-(x-y)(3+2+1)
=-(x-y)^6

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