计算:(x-y)^2*(y-x)^4*(x-y)
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计算:(x-y)^2*(y-x)^4*(x-y)
计算:(x-y)^2*(y-x)^4*(x-y)
计算:(x-y)^2*(y-x)^4*(x-y)
(X-Y)^7
(x-y)^2*(y-x)^4*(x-y)
=(x-y)^2×(x-y)^4×(x-y)
=(x-y)^7
(x-y)^7
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