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题目:xyz^2(x-2y)+1/5x^3(1-y)

问题描述:

xyz^2(x-2y)+1/5x^3(1-y)

最佳答案:

xyz^2(x-2y)+1/5x^3(1-y)
=x^2yz^2-2xy^2z^2+1/5x^3-1/5x^3y

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