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: 25

Answer

$x^{2}+2x-9$

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 $(f+g)(x)$. We know that $(f+g)(x)=f(x)+g(x)$. Therefore, $(f+g)(x)=(x^{2}-9)+(2x)=x^{2}+2x-9$.
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