### Home > A2C > Chapter 9 > Lesson 9.1.1 > Problem 9-9

9-9.

**Polynomials** are expressions that can be written as a sum of terms of the form:

Which of the following equations are polynomial equations? For those that are not polynomials, explain why not. Check the lesson 9.1.1 Math Notes box for further details about polynomials.

This is a polynomial.

This is a polynomial.

This is not a polynomial.

This is not a polynomial.

This is a polynomial.

This is not a polynomial.

Write an equation for a new polynomial function and then write an equation for a new function that is not a polynomial.

Look at parts (a) through (f) for examples.