Answer
$3\sqrt5$
Work Step by Step
Simplify each radical when needed to obtain:
$=\sqrt{5} + \sqrt{4(5)}
\\=\sqrt{5} + 2\sqrt{5}
\\=(1+2)\sqrt{5}
\\=3\sqrt{5}$
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 5 - Number Theory and the Real Number System - 5.4 The Irrational Numbers - Exercise Set 5.4 - Page 296: 47
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