Algebra and Trigonometry 10th Edition

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

Chapter 1 - 1.5 - Complex Numbers - 1.5 Exercises - Page 119: 27


$3-3\sqrt 2i$

Work Step by Step

$(-2+\sqrt {-8})+(5-\sqrt {-50})=(-2+\sqrt {8}i)+(5-\sqrt {50}i)$ where i = $\sqrt {-1}$ $(-2+5)+(+\sqrt {8}i-\sqrt {50}i)=(3)+(+2\sqrt {2}i-5\sqrt {2}i)=$$3-3\sqrt 2i$
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