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: 75

Answer

$5i$

Work Step by Step

Multiply the numerator and denominator by the conjugate of the complex imaginary number. $\frac{-5i}{i}\times\frac{i}{i}$ Expand. $\frac{-5i}{i^2}$ Remember that $i^2=-1$. $\frac{-5i}{-1}$ Simplify. $5i$
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