#### Answer

imaginary unit = First blank
-1 = second blank

#### Work Step by Step

We know that his number is not real so therefore it is an imaginary unit that can be very helpful in some sitautions, and it has a value of -1 when squared.

Published by
Cengage Learning

ISBN 10:
1111826854

ISBN 13:
978-1-11182-685-7

imaginary unit = First blank
-1 = second blank

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