Answer
See below.
Work Step by Step
$\sqrt8=2\sqrt2$ Thus these can be easily added because they are like radicals.
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 7 - Section 7.4 - Adding, Subtracting, and Dividing Radical Expressions - Exercise Set - Page 540: 89
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