问题描述: 合并同类项:6x^2y+2xy-3x^2y^2-7x-5yx-4y^2x^2-6x^2y 1个回答 分类:数学 2014-10-26 问题解答: 我来补答 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 展开全文阅读