#### Answer

$12\sqrt{2}$

#### Work Step by Step

RECALL:
For any real numbers $a, b,c$ and $d$,
$ad+bd+cd=(a+b+c)d$
Use the rule above to combine like terms:
$=(4+3+5)\sqrt{2}
\\=12\sqrt{2}$

Published by
Pearson

ISBN 10:
0-13417-805-X

ISBN 13:
978-0-13417-805-9

$12\sqrt{2}$

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