Answer
$-2\sqrt 2$
Work Step by Step
$\sqrt {8}-\sqrt {32}$ Factor.
$(\sqrt 4*\sqrt 2)-(\sqrt 16*\sqrt 2)$ Use the product rule and simplify.
$2\sqrt 2-4\sqrt 2$ Combine like radicals.
$-2\sqrt 2$
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 10.4 - Adding, Subtracting, and Multiplying Radical Expressions - Exercise Set - Page 709: 1
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