Answer
$(-\infty,+\infty)$
Work Step by Step
$f-g)=x^2-2x-(x-5)=x^2-2x-x+5=x^2-3x+5$
The domain is all $\mathbb{R}$
$(-\infty,+\infty)$
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 - Review Exercises - Page 173: 33
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