Answer
$9+\sqrt 5$
Work Step by Step
Step 1: $(2+\sqrt 5)^{2}$
Step 2: $2^{2}+(\sqrt 5)^{2}+2(2)(\sqrt 5)$
Step 3: $4+5+4\sqrt 5$
Step 4: $9+\sqrt 5$
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 8 - Radical Functions - 8.3 Multiplying and Dividing Radicals - 8.3 Exercises - Page 643: 31
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