Don't expand out until you have factorized as fully as possible.
In this case, we have
Note
That leaves us with
Answer should be visible now
Hello,
I would like to know how to simplify this expression step-by-step:
Wolfram Alpha
If I try and do it by hand on paper, I get results like this:
http://www.upload.ee/image/969390/clipboard_upped.png
(I forgot to add bottom of fraction at the end, because top was already wrong, but the point of the problem remains...)
Thank you, I understand that exercise now
But, I came over this new one:
What is the common denominator here? I could use as a common denominator on first two blocks, but the last one has under it, how do I deal with that?
This is where I am stuck..