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: 62

Answer

$18$

Work Step by Step

Use the FOIL method to multiply the binomials. $2+4i\sqrt{2}-4i\sqrt{2}-16i^2$ Substitute $-1$ for $i^2$. Also, add/subtract like terms. $2-16(-1)$ Simplify. $18$
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