Answer
$i=\sqrt{-1}$
Work Step by Step
The imaginary unit $i$ is defined as the square root of negative one. That is $i=\sqrt{-1}$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 7 - Section 7.7 - Complex Numbers - Exercise Set - Page 571: 118
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