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: 17


$|-6+8i|=\sqrt {(-6)^2+8^2}=\sqrt {100}=10$

Work Step by Step

$z=-6+8i$ $|a+bi|=\sqrt {a^2+b^2}$ $|-6+8i|=\sqrt {(-6)^2+8^2}=\sqrt {36+64}=\sqrt {100}=10$
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