Answer
$(f+g)(x)=2x^{2}-2$
$(f+g)(5)=48$
Work Step by Step
$(f+g)(x)=f(x)+g(x)$
$=2x^{2}-x-3+x+1$
$=2x^{2}-2$
Plugin $x=5$ into $2x^{2}-2$.
$(f+g)(5)=2\times5^{2}-2=50-2=48$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 2 - Section 2.3 - The Algebra of Functions - Exercise Set - Page 132: 15
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