问题描述: (x-(x+1分之2x))除以x^2-1分之x^2-2x+1 1个回答 分类:数学 2014-11-24 问题解答: 我来补答 原式=(x²+x-2x)/(x+1)÷[(x-1)²/(x+1)(x-1)]=(x²-x)/(x+1)÷[(x-1)/(x+1)]=x(x-1)/(x+1)*(x+1)/(x-1)=x 展开全文阅读