#### Answer

$ i\sqrt {15}$

#### Work Step by Step

$\sqrt {-15} = \sqrt {-1} \sqrt {15} = i\sqrt {15}$
Because $\sqrt {-1} = i$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$ i\sqrt {15}$

$\sqrt {-15} = \sqrt {-1} \sqrt {15} = i\sqrt {15}$
Because $\sqrt {-1} = i$

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