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

1 Answer

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)