问题描述: 1/4x^2y-3x^2+3/4x^2y+2x^2合并同类项 1个回答 分类:数学 2014-11-30 问题解答: 我来补答 1/4x^2y-3x^2+3/4x^2y+2x^2=1/4x^2y+3/4x^2y+2x^2-3x^2=x^2y-x^2 展开全文阅读