Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - Chapter 5 Test: 1

Answer

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

Work Step by Step

Grouping like terms together and then adding/subtracting them together, we obtain: $(-7x^{2}+6x-2)+(5x^{2}-8x+7)$ =$(-7x^{2}+5x^{2})+(6x-8x)+(-2+7)$ =$(-2x^{2})+(-2x)+(5)$ =$-2x^{2}-2x+5$
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