约分.x-2x^2y/x^2y-2xy^2

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约分.x-2x^2y/x^2y-2xy^2约分.x-2x^2y/x^2y-2xy^2约分.x-2x^2y/x^2y-2xy^2x-2x^2y/x^2y-2xy^2=x(1-2xy)/[xy(x-2y)

约分.x-2x^2y/x^2y-2xy^2
约分.x-2x^2y/x^2y-2xy^2

约分.x-2x^2y/x^2y-2xy^2
x-2x^2y/x^2y-2xy^2
=x(1-2xy)/[xy(x-2y)]
=(1-2xy)/[y(x-2y)]

(1-2xy)/y(x-2y)