## Introductory Algebra for College Students (7th Edition)

Published by Pearson

# Chapter 5 - Section 5.1 - Adding and Subtracting Polynomials - Exercise Set: 27

#### Answer

3$x^{3}$ + 2$x^{2}$ - 9x +7

#### Work Step by Step

(2$x^{2}$- 6x+ 7) + (3$x^{3}$ -3x) The like terms are 2$x^{2}$ , 3$x^{3}$ , -6x and -3x (both containing x) and the constant terms 7. We begin by grouping these pairs of like terms. = 2$x^{2}$ + 3$x^{3}$ +(-6x -3x)+ 7 = 3$x^{3}$ + 2$x^{2}$ - 9x +7

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