How do you write polynomials in descending order in simplest form?

Answer 1

You start with the monomial of highest degree followed by the next monomial and continue till you have listed them all with the one of highest degree first and the lowest degree last.

The last term is often a number (constant).

( in case you forgot, a monomial is a polynomial with only one term.)

The simplest form part just means combine any like terms. I would suggest doing that first.