Hi, I have a fraction which I can't simplify fully.

http://i301.photobucket.com/albums/n...5/Noether3.jpg

I know that http://i301.photobucket.com/albums/nn74/BL5965/x2-4.jpg becomes (x + 2)(x - 2)

By solving with a calculator, the answer is:

http://i301.photobucket.com/albums/n...oether3Ans.jpg

How do I get there, with working?

Please help.

Thanks, BG