Elementary Algebra

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

Chapter 5 - Exponents and Polynomials - 5.1 - Addition and Subtraction of Polynomials - Problem Set 5.1: 57

Answer

$x^{2}$ - 11x -8

Work Step by Step

(-$x^{2}$ - 3x + 4) + (-2$x^{2}$ - x - 2) - (-4$x^{2}$ + 7x + 10) = Use the distributive property: -$x^{2}$ - 3x + 4 - 2$x^{2}$ - x - 2 + 4$x^{2}$ - 7x - 10) = Combine like terms. (-$x^{2}$- 2$x^{2}$+ 4$x^{2}$) + (-3x - x - 7x) + (4 - 2 - 10) = Simplify. $x^{2}$ - 11x -8
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