College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.3: 38

Answer

$8\sqrt{5}$

Work Step by Step

$\sqrt{20} +6\sqrt{5}$ By the Product Rule for Square Roots $=(\sqrt{4} \cdot \sqrt{5}) + 6\sqrt{5}$ $=2\sqrt{5} + 6\sqrt{5}$ By the Distributive Property $=(2+6)\sqrt{5}$ $=8\sqrt{5}$
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