Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 4 Quadratic Functions and Factoring - 4.6 Perform Operations with Complex Numbers - Guided Practice for Examples 6 and 7 - Page 279: 18

Answer

4

Work Step by Step

$|-4i|=\sqrt (-4)^2=4$
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