(3x-y)^2+(2x+3y)(-2x-3y)+5xy 计算
问题描述:
(3x-y)^2+(2x+3y)(-2x-3y)+5xy 计算
急
答
5x^2-13xy-8y^2
(3x-y)^2+(2x+3y)(-2x-3y)+5xy 计算
急
5x^2-13xy-8y^2