Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Exercise Set: 129

Answer

$12x^2+11$

Work Step by Step

Use the distributive property to find: $=18x^2+4-[6x^2-12+5] \\=18x^2+4-(6x^2-7) \\=18x^2+4-6x^2-(-7) \\=18x^2+4-6x^2+7$ Rearrange and regroup the terms, and then simplify using the distributive property to find: $=(18x^2-6x^2)+(4+7) \\=(18-6)x^2+11 \\=12x^2+11$
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