Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 13 - Cumulative Review: 44

Answer

$5\sqrt 5$

Work Step by Step

Step 1: $\sqrt (45)+\sqrt (20)$ Step 2: $\sqrt (9\times5)+\sqrt (4\times5)$ Step 3: $(\sqrt 9\times\sqrt 5)+(\sqrt 4\times\sqrt 5)$ Step 4: $(3\times\sqrt 5)+(2\times\sqrt 5)$ Step 5: $3\sqrt 5+2\sqrt 5$ Step 6: $5\sqrt 5$
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