Polynomials in descending order? Help me please? Quiz on it tomorrow. NEED ANSWERS...

...FAST!? ok so today my math teacher taught us about polynomials in descending order and said there will be a quiz on it tom.

i dont really understand so could someone give me an easy to understand explanation of how to do it? examples would be nice too but i dont want to push my luck. i will take what i can get.

thank you!
 
Top