#### Answer

$4i$

#### Work Step by Step

$\sqrt{16} \cdot \sqrt{-1} = \sqrt{16} \cdot i = 4i$

Published by
Pearson

ISBN 10:
0321726391

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

$4i$

$\sqrt{16} \cdot \sqrt{-1} = \sqrt{16} \cdot i = 4i$

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