Answer
$11\sqrt{5}$
Work Step by Step
Using $a(b+c)=ab+ac$, or the Distributive Property, the given expression, $
19\sqrt{5}-8\sqrt{5}
,$ simplifies to
\begin{array}{l}\require{cancel}
(19-8)\sqrt{5}
\\\\=
11\sqrt{5}
.\end{array}
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 9 - Roots and Radicals - 9.1 - Roots and Radicals - Problem Set 9.1 - Page 401: 62
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