Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 5 - Section 5.1 - Adding and Subtracting Polynomials - Exercise Set - Page 348: 21


10$x^{2}$ - 12x

Work Step by Step

(7$x^{y}$ - 11x) + (3$x^{2}$-x) The like terms are 7$x^{2}$ and 3$x^{2}$ containing the same variable to the same power($x^{2}$), as well as -11x and -x (both containing x). We begin by grouping these pairs of like terms. ( 7$x^{2}$ + 3$x^{2}$)+ (-11x -x) = 10$x^{2}$ + (- 12x) =10$x^{2}$ - 12x
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