Question

How do you simplify `f(x) = \frac { 1+ x } { ( 1- x ) ^ { 2} }`?

Answer 1

`f(x)=1/(1-x)`

Explanation:

Your function can be written just like:
`f(x)=(1+x)/((1-x)(1+x))`, amplify the 1+x
and you get `f(x)=1/(1-x)`
But be careful, because your x Definition of f(x), is still the same as the old one which is `x in (-oo,-1)uu(-1,1)uu(1, +oo)`