合并同类项:6x^2y+2xy-3x^2y^2-7x-5yx-4y^2x^2-6x^2y

问题描述:

合并同类项:6x^2y+2xy-3x^2y^2-7x-5yx-4y^2x^2-6x^2y

6x^2y+2xy-3x^2y^2-7x-5yx-4y^2x^2-6x^2y
=6x^2y-6x^2y +2xy-5yx-3x^2y^2-4y^2x^2-7x
=-3xy-7x^2y^2-7x