#### Answer

$7\sqrt {7}-4\sqrt[3] x$

#### Work Step by Step

$3\sqrt {7}-\sqrt[3] {x}+4\sqrt {7}-3\sqrt[3] x$
$(3+4)\sqrt {7}-(1+3)\sqrt[3] x$ Combine like radicals.
$7\sqrt {7}-4\sqrt[3] x$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$7\sqrt {7}-4\sqrt[3] x$

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