xy-1/3x二次方y的二次方-3/5xy-1/2x二次方y二次方
问题描述:
xy-1/3x二次方y的二次方-3/5xy-1/2x二次方y二次方
答
(2x^2y-3xy^2)-(xy^2-3x^2y)=5x^2y-4xy^2=-3.25
xy-1/3x二次方y的二次方-3/5xy-1/2x二次方y二次方
(2x^2y-3xy^2)-(xy^2-3x^2y)=5x^2y-4xy^2=-3.25