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: 15

Answer

34

Work Step by Step

(3+5i)(-3-5i) 9-15i+15i-25$i^{2}$ Double Distribution (FOIL) 9-25(-1) Combine like terms and use the property $i^{2}$=-1 9+25 Simplify 34 Simplify
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