Answer
$10i$
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. $\sqrt 100=10$. Thus the answer is 10i.
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 10 - Exponents and Radicals - 10.8 The Complex Numbers - 10.8 Exercise Set - Page 686: 9
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