Question

化简x-1分之x+1-x2-1分之x2-2x÷x2-x-2/x2+2x+1

Answer 1

原式=（x+1）/（x-1）-x(x-2)/(x+1)(x-1)÷(x-2)(x+1)/(x+1)²

=（x+1）/(x-1)-x/(x-1)

=(x+1-x)/(x-1)

=1/(x-1)

请好评

~在右上角点击【评价】,然后就可以选择【满意,问题已经完美解决】了.

如果你认可我的回答,敬请及时采纳,

~你的采纳是我前进的动力~~