# Chapter 3 - Exponents, Polynomials and Functions - 3.2 Combining Functions - 3.2 Exercises: 12

a polynomial

#### Work Step by Step

$\bf{\text{Solution Outline:}}$ Use the description of a polynomial expression to evaluate if the given expression, $-20m^3n-10m^2n^2 ,$ is a polynomial or not. $\bf{\text{Solution Details:}}$ A polynomial expression is an expression where the exponent of the variable in every term is a nonnegative integer. Using the description above, the given expression is $\text{ a polynomial .}$

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