分式计算,(xy-x²)÷(x-y)/(xy)
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分式计算,(xy-x²)÷(x-y)/(xy)
分式计算,(xy-x²)÷(x-y)/(xy)
分式计算,(xy-x²)÷(x-y)/(xy)
(xy-x²)÷(x-y)/(xy)
=x(y-x) ÷ (x-y)/xy
=x(y-x) * xy/(x-y)
=-x²y