Answer
$18\sqrt{3}$
Work Step by Step
Simplify each radical when needed to obtain:
$=4\sqrt{4(3)} + 2\sqrt{25(3)}
\\=4(2)\sqrt{3} +2(5)\sqrt{3}
\\=8\sqrt{3}+10\sqrt{3}
\\=(8+10)\sqrt{3}
\\=18\sqrt{3}$
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: 52
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