Question

How do you determine if `ax^-3` is a polynomial and if so, is it a monomial, binomial, or trinomial?

Answer 1

Look for (+) and (-) signs. There are not any (+) or (-) signs so `ax^-3`is a monomial

Explanation:

If there are no ( +) or (-) signs the terms is monomial.
If there is one (+) or (-) sign it is a binomial
If there are two (+) or (-) signs it is a trinomial.