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(x-y)的五次方÷(y-x)的三次方(y-x)的两次方
人气:265 ℃ 时间:2020-05-04 01:16:50
解答
(x-y)^5/[(y-x)^3(y-x)^2]
=(x-y)^5/[-(x-y)^3(x-y)^2]
=(x-y)^5/[-(x-y)^5]
=-1.
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