Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 7 - Section 7.7 - Complex Numbers - Exercise Set: 31

Answer

$9 + 5i\sqrt{3}$

Work Step by Step

Regroup then simplify by combining like terms to obtain $=(2+7) + (i\sqrt{3}+4i\sqrt{3}) \\= 9 + (i+4i)\sqrt{3} \\=9 + 5i\sqrt{3}$
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