Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 8 - 8.5 - The Complex Plane - 8.5 Exercises - Page 603: 20


$|-8+3i|=\sqrt {73}$

Work Step by Step

$z=-8+3i$ $|a+bi|=\sqrt {a^2+b^2}$ $|-8+3i|=\sqrt {(-8)^2+3^2}=\sqrt {64+9}=\sqrt {73}$
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