问题描述： 化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x²分之xy+y² 1个回答 分类：数学 2014-11-03 问题解答： 我来补答 原式=x/(x-y)+y³/x(x-y)²÷[-y(x+y)/(x+y)(x-y)]=x/(x-y)-y³/x(x-y)²×(x-y)/y=x/(x-y)-y²/x(x-y)=(x²-y²)/x(x-y)=(x+y)(x-y)/x(x-y)=(x+y)/x 展开全文阅读
