Hi, I'm new to this forum. Currently taking math since it's a required pre-requisite. I must pass in order to move onto my college core classes. Since it's been over 10 years since I've done math (in high school) I am at a complete loss and feel like a REAL idiot when I'm in class.

Here at the problems I am stumped on:

(5x3+15x2-25x) ÷ 5x

(a9)-3 ÷ (a-4)7

-4w3-16w2+20w

b3-216

u3+125v3

2h2-h-3=0

2w(4w+1)=1

m3+2m2-3m=0

3x(2x+1)=18

Please help???