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: 24

Answer

-5$x^{2}$ +9x+11

Work Step by Step

(-7$x^{2}$+8x + 3) + (2$x^{2}$+ x +8) The like terms are -7$x^{2}$ and 2$x^{2}$ containing the same variable to the same power($x^{2}$), as well as 8x and x (both containing x), and the constant terms 3 and 8. We begin by grouping these pairs of like terms. =( -7$x^{2}$ + 2$x^{2}$) + (8x + x) + (3+8) = -5$x^{2}$ +9x+11
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