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 - Test - Page 416: 2

Answer

$$13x^3 + x^2 - x - 24$$

Work Step by Step

To simplify this expression we need to get rid of the parentheses and perform the addition or subtraction as specified. To get rid of the parentheses, we combine the operation in front of the parentheses with the sign in front of each of the terms inside the parentheses: $$7x^3 + 3x^2 - 5x - 11 + 6x^3 - 2x^2 + 4x - 13$$ Now we combine like terms: $$13x^3 + x^2 - x - 24$$
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