Hi, I'm new to the board.
I had a big ol' heaping pile of algebra homework to do recently, and I'm happy to say that I've actually figured most of it out, save for these four problems. It's really just two basic ideas that I don't understand, as the problems come in pairs.
For the first pair, I'm just asked to simplify:
I've been trying to solve these using polynomial long division, but I don't think I'm doing the descending-power reordering right or something.
The second pair are just addition and subtraction problems, but I'm stumped.
If someone can help me understand how to solve these problems, I'd appreciate it.