Written out correctly, that would look like this:
. The first thing we are going to do is try to factor that quadratic. Anytime you see a second degree polynomial or higher, chances are you are going to be doing something with it that involves factoring. If we factor that we have this:
. Now we can see more easily what we can cross cancel to simplify. One (b-2) on the bottom left cancels with the (b-2) top right. One (b-5) top left cancels with the (b-5) lower left. What that leaves us with in the end is
. That is as simple as you can get.