Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 8 - Complex Numbers, Polar Equations, and Parametric Equations - Section 8.1 Complex Numbers - 8.1 Exercises - Page 358: 65

Answer

$-14+2i$

Work Step by Step

Step 1: $(2+4i)(-1+3i)$ Step 2; $2(-1+3i)+4i(-1+3i)$ Step 3: $-2+6i-4i+12i^{2}$ Step 4: $-2+2i+12(-1)$ Step 5: $-2+2i-12$ Step 6: $-14+2i$
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