Question

What is the degree of the following monomial -9?

Answer 1

It is degree `0`.

The constant term of any polynomial is also considered the coefficient of the `0^(th)` power term.

The degree of a polynomial is the greatest power with non-zero coefficient. So the degree of a non-zero constant polynomial is `0`.

The degree of the monomial `0` is left undefined (or, in some fields, defined to be `-oo`).