计算,(x^2-xy)/(xy^2)·y/(y-x) 分式的 乘法,
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计算,(x^2-xy)/(xy^2)·y/(y-x) 分式的 乘法,
计算,(x^2-xy)/(xy^2)·y/(y-x) 分式的 乘法,
计算,(x^2-xy)/(xy^2)·y/(y-x) 分式的 乘法,
(x^2-xy)/(xy^2)·y/(y-x)
=x(x-y)/(xy^2)·y/(y-x)
= (x-y)/(y^2)·y/(y-x)
=-1/y
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