College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 1 - Equations and Inequalities - Exercise Set 1.4 - Page 142: 14

Answer

12+84i

Work Step by Step

(8-4i)(-3+9i) -24+72i+12i-36$i^{2}$ Double Distribution (FOIL) -24+84i-36(-1) Combine like terms and use the property $i^{2}$=-1 -24+84i+36 Simplify 12+84i Simplify
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