Intermediate Algebra (12th Edition)

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

Chapter 4 - Section 4.3 - Polynomial Functions, Graphs, and Composition - 4.3 Exercises: 30

Answer

$x^{2}+x-12$

Work Step by Step

We are given that $f(x)=x^{2}-9$, $g(x)=2x$, and $h(x)=x-3$. We are asked to find the value of $(f+h)(x)$. We know that $(f+h)(x)=f(x)+h(x)$. Therefore, $(f+h)(x)=(x^{2}-9)+(x-3)=x^{2}+x-9-3=x^{2}+x-12$.
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