Answer
I
Work Step by Step
$\sqrt {18} + \sqrt {72}$
$\sqrt {18} + \sqrt {4*18}$
$\sqrt {18} + 2\sqrt {18}$
$3\sqrt {18}$
$3\sqrt {2*3*3}$
$3*3\sqrt {2}$
$9\sqrt {2}$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 10 - Radical Expressions and Equations - Cumulative Test Prep - Multiple Choice - Page 647: 6
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