计算(xy-x²)÷x-y/xy

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计算(xy-x²)÷x-y/xy计算(xy-x²)÷x-y/xy计算(xy-x²)÷x-y/xy原式=-x(x-y)*xy/(x-y)=-x²y

计算(xy-x²)÷x-y/xy
计算(xy-x²)÷x-y/xy

计算(xy-x²)÷x-y/xy
原式=-x(x-y)*xy/(x-y)
=-x²y