+118608 Well,
You are probably supposed to have memorized the factorization for the difference of 2 cubes.
Look it up on the net if you do not know it.
Since you are told to simplify it is reasonable to assume that one of the 2 factors you of the numerator is also a factor of the denominator.
Use algebraic division to work out which one it is.
etc.
Please let guest finish this for him/her self.
