Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 5 - Chapters R-5 - Cumulative Review Exercises: 2

Answer

$2x^2+5x+4$

Work Step by Step

$\bf{\text{Solution Outline:}}$ Combine like terms to simplify the given expression, $ 3x^2-4x+4+9x-x^2 .$ $\bf{\text{Solution Details:}}$ By combining like terms, the expression above is equivalent to \begin{array}{l}\require{cancel} (3x^2-x^2)+(-4x+9x)+4 \\\\= 2x^2+5x+4 .\end{array}
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