#### Answer

$-i\sqrt 6$

#### Work Step by Step

$-\sqrt {-6}$
=$-\sqrt {-1\times6}$
=$-1\times\sqrt {-1}\times\sqrt {6}$
=$-1\times i\times\sqrt 6$
=$-i\sqrt 6$

Published by
Pearson

ISBN 10:
0321726391

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

$-i\sqrt 6$

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