Answer:
(a) Monomial
(b) Cubic
Step-by-step explanation:
Given

Required
Classify
<u>By number of terms</u>
The above polynomial is single term.
Single term polynomials are referred to as monomial
<u>By degrees</u>
To determine the degree, we consider the variable farthest from the constant.
In this case, n is farther from 9 than m.
And the power or degree of n is 3.
Polynomials with degree 3 are referred to as cubic polynomial