Answer
$9\sqrt3$
Work Step by Step
$\sqrt{27}+3\sqrt{12}$
Factor out perfect squares.
$\sqrt{(9)(3)}+3\sqrt{(4)(3)}$
Simplify.
$3\sqrt3+(3)(2)\sqrt3$
$3\sqrt3+6\sqrt3$
Combine like radicals.
$9\sqrt3$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 8 - Mid-Chapter Check Point - Page 594: 5
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