首页 > 数学 > 题目详情

(x1-x2)+(x2-x1)/(x1x2)=(x1-x2)(x1x2-1)/x1x2这一步怎么推出来的,(x1-x2)+(x2-x1)/(x1x2)=(x1-x2)(x1x2-1)/x1x2这一步怎

本题链接: