Answer
$7\sqrt{2}$
Work Step by Step
Factor out $\sqrt{2}$.
$3\sqrt{2}+4\sqrt{2}=\sqrt{2}(3+4)$
Simplify.
$=\sqrt{2}(7)$
$=7\sqrt{2}$
Hence, the correct answer is $7\sqrt{2}$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.10 nth Roots; Rational Exponents - A.10 Assess Your Understanding - Page A88: 33
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