问题描述: 1/(6X-4Y)-1/(6X+4Y)+3X/(4Y^2-9X^2)= 1个回答 分类:数学 2014-10-14 问题解答: 我来补答 (6X+4Y)/(36X2-16Y2)-(6X-4Y)/(36X2-16Y2)=2Y/(9X2-4Y2)再+3X/(4Y^2-9X^2)=(2Y-3X)/(4Y^2-9X^2)=2Y+3X 展开全文阅读