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: 55

Answer

$5-12i$

Work Step by Step

Use the FOIL method to multiply the binomials. $9-6i-6i+4i^2$ Substitute $-1$ for $i^2$. Also, add/subtract like terms. $9-12i+4(-1)$ Simplify. $5-12i$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.