【2x(x平方y-xy平方)+xy(xy(xy-x平方)】除以x平方y

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【2x(x平方y-xy平方)+xy(xy(xy-x平方)】除以x平方y【2x(x平方y-xy平方)+xy(xy(xy-x平方)】除以x平方y【2x(x平方y-xy平方)+xy(xy(xy-x平方)】除

【2x(x平方y-xy平方)+xy(xy(xy-x平方)】除以x平方y
【2x(x平方y-xy平方)+xy(xy(xy-x平方)】除以x平方y

【2x(x平方y-xy平方)+xy(xy(xy-x平方)】除以x平方y
(2x(x^2y-xy^2)+xy(xy(xy-x^2)))/(x^2y)
=(2x^3y-2x^2y^2+xy(x^2y^2-x^3y))/(x^2y)
=(2x^3-2x^2y^2+x^3y^3-x^4y^2)/(x^2y)
=x^2y(2x-2y+xy^2-x^2y)/(x^2y)