#### Answer

$\sqrt[4] {20x^{3}}$

#### Work Step by Step

$\sqrt[4] {4x^{3}}\sqrt[4] 5=\sqrt[4] {(4x^{3})(5)}=\sqrt[4] {20x^{3}}$

Published by
Pearson

ISBN 10:
0321726391

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

$\sqrt[4] {20x^{3}}$

$\sqrt[4] {4x^{3}}\sqrt[4] 5=\sqrt[4] {(4x^{3})(5)}=\sqrt[4] {20x^{3}}$

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