#### Answer

$i\sqrt 7 $

#### Work Step by Step

To express in terms of $i$ simply divide the number under the radical by -1 and write i as a multiplier. $\sqrt 7$ is not reducible. Thus the answer is $\sqrt 7$i.

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

$i\sqrt 7 $

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