Question

Classify the following polynomial as monomial, binomial, trinomial. Which polynomial do not fit in any category?

 7 + a + 5b

Answer 1

Definitions:
A polynomial is monomial if it has exactly one term. It is called binomial if it has exactly two non-zero terms. A polynomial ​is a trinomial if it has exactly three non-zero terms.

The polynomial \[7 + a + 5b\] has exactly three terms, i.e., 7, a and 5b. Therefore, it is a trinomial.