Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 8 - Review Exercises - Page 409: 14



Work Step by Step

Step 1: $(2+i)^{3}$ Step 2: $(2+i)(2+i)(2+i)$ Step 3: $(2+i)(2(2+i)+i(2+i))$ Step 4: $(2+i)(4+2i+2i+i^{2})$ Step 5: $(2+i)(4+4i+i^{2})$ Step 6: $(2+i)(4+4i-1)$ Step 7: $(2+i)(3+4i)$ Step 8: $2(3+4i)+i(3+4i)$ Step 9: $6+8i+3i+4i^{2}$ Step 10: $6+11i-4$ Step 11: $2+11i$
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