Answer
See below.
Work Step by Step
To add like radicals add the coefficients of the like radicals and multiply the sum by the like radical. E.g. $2\sqrt2+3\sqrt2=5\sqrt2$.
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: 88
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