(2x^3y-4x^2y^3-7xy^3)÷(-2xy)写出过程Com!

问题描述:

(2x^3y-4x^2y^3-7xy^3)÷(-2xy)写出过程
Com!

(2x^3y-4x^2y^3-7xy^3)÷(-2xy)
=xy(2x^2-4xy^2-7y^2)/(-2xy)
=-1/2(2x^2-4xy^2-7y^2)