Answer
$3-3\sqrt 2i$
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$
Algebra and Trigonometry 10th Edition
by Larson, Ron
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
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