# Math Help - True/false question

1. ## True/false question

http://www.ma.utexas.edu/users/asofer/S09/Review2.jpg

number 8, part iv.

I don't really know what to do...it looks similar to iii (which is false) but I don't know if that would help me. I don't see why it would be true, but if it's false I have to prove it's false.

2. Write it out

$(\mathbf{A}\mathbf{B}\mathbf{A}^{-1})^3 = \mathbf{A}\mathbf{B}\mathbf{A}^{-1} \mathbf{A}\mathbf{B}\mathbf{A}^{-1} \mathbf{A}\mathbf{B}\mathbf{A}^{-1}$