The denominator is .  Form the conjugate by
changing the sign only the term that contains the letter
i.

So the conjugate of  is 

Now put that conjugate over itself:  

That just equals 1 because any number (other than 0) divided by
itself is 1.  So we multiply the original problem by that:





Use FOIL on the top and the bottom:



Simplify:



Now use the fact that since , the 
So we replace  by 







Make two fractions



Edwin