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: 70

Answer

$26$

Work Step by Step

Step 1: $(5+i)(5-i)$ Step 2: $5(5-i)+i(5-i)$ Step 3: $25-5i+5i-i^{2}$ Step 4: $25-(-1)$ Step 5: $25+1$ Step 6: $26$
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