Answer
$2\sqrt 10$
Work Step by Step
Step 1: $\sqrt 40$
Step 2: $\sqrt (4\times10)$
Step 3: $\sqrt 4\sqrt 10$
Step 4: $2\sqrt 10$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Section 10.5 - Integrated Review - Radicals and Rational Exponents - Page 720: 21
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