2xy/(x^2-y2)+x/(x+y)怎么化简

问题描述:

2xy/(x^2-y2)+x/(x+y)怎么化简

原式=2xy/(X^2-y^2)+x(x-y)/(x^2-y^2)
=(2xy+x^2-xy)/(x^2-y^2)
=x(x+y)/(x-y)(x+y)
=x/(x-y)