Is M a monomial

Answer 1

Yes. "Monomial" has two definitions:

1. Any number like 1, x, xn, xyz, or xaybzc (with n, a, b, and c positive integers).

2. Anything under definition 1, but including monomials multiplied by a constant, like -5x and (1+2i)xy.

Assuming "M" is a variable, "M" is a monomial by either definition.

Basically, (by the second definition) a monomial is something that's one of the terms of a polynomial. e.g. in x2 + 5x - 3, x2, 5x, and -3 are monomials, and in x2 + xy + y2, x2, xy, and y2 are monomials.