Answer
$$ 2\sqrt{10}i$$
Work Step by Step
We know that $i=\sqrt{-1}$. We also know that standard form is $a\pm bi$, where a and b are real numbers. Thus, simplifying the equation, we find:
$$ \sqrt{40}\sqrt{-1} \\ \sqrt{40}i\\ 2\sqrt{10}i$$
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: 15
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