Originally Posted by

**xxStrikeback** Sorry for the first thread. Anyways, I am really struggling with these problems.

I will post two for now, hopefully the work here will help me figure out the others.

First, one division problem with several exponents.

{ (x^2 - 1)^1/2 - (x^2 - 1)^-1/2 (2 - x^2) } / (x^2 - 1) = 0

The hint is be sure to simplify first. I have no idea how to start. Do I take the negative exponents to the bottom? Or cancel out? No clue.

Second.

| 1 - 4x | - 7 < or = - 2

I'm not remembering the rules on abs. val. when there are variables in the bars, I know for |-2| it just becomes 2, |2| is 2, etc. But when there's variables in there, I'm not sure, so a link or explanation of that would really help.

Thanks in advance, I hope this satisfies the rules.