College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 1 - Section 1.3 - Complex Numbers - 1.3 Exercises: 34

Answer

$i\sqrt{2}$

Work Step by Step

Divide the inside of each radical with one radical over both of them. $\sqrt{\frac{-40}{20}}$ Simplify. $\sqrt{\frac{-40}{20}}=\sqrt{-2}$ Pull the negative inside the radical into an imaginary number outside of the radical. $i\sqrt{2}$
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