# simplify

• Apr 2nd 2012, 11:32 AM
Mhmh96
simplify
• Apr 2nd 2012, 12:42 PM
MathVideos
Re: simplify
Could you explain where you are running into problems and maybe I can help you get past them. I don't think you learn much if I just do the problem for you.
• Apr 2nd 2012, 12:50 PM
Mhmh96
Re: simplify
How can i simplify the denominator ?
• Apr 2nd 2012, 12:58 PM
MathVideos
Re: simplify
Hint: recall the difference of 2 squares.

$a^2-b^2=(a+b)(a-b)$

Think of the denominator as (a-b)

Think you can take it from here? Think about it for a minute or two and if you still can't get it, let me know.
• Apr 2nd 2012, 06:22 PM
Wilmer
Re: simplify
Why have you got brackets in the denoninator?
• Apr 2nd 2012, 06:24 PM
Prove It
Re: simplify
Quote:

Originally Posted by Wilmer
Why have you got brackets in the denoninator?

Probably just to specify which sign they're going to change first...