Intermediate Algebra: Connecting Concepts through Application

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: 31

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: $9+\sqrt 5$
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