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[-3(x-y)^3]^2•(y-x)^3
人气:154 ℃ 时间:2020-10-01 01:31:33
解答
[-3(x-y)^3]^2•(y-x)^3
=[9(x-y)^6]*[-(x-y)^3]
=-9(x-y)^9
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