I'm doing my victory lap (Grade 13), and I need a credit in Advanced Functions.

I'm already working my butt off to keep up with the review, but I feel that I need a solid foundation of these concepts before I can really excel in this course. So, If anybody could give me a hand...

I looked at (x^2 - 1) as a difference of squares, and then multiplied each side by the other's denominator to achieve a common denominator.

Then I canceled, and ended up with this:

Collected like terms...

Then, I thought - I'm way off track here. The answer is apparently

I'm hoping someone can do the answer, and explain to me where I went wrong. I've tried it several times, but I'm just too rusty, I think. Thanks a million to whoever's up to the task!

- Cameron