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 - Page 570: 25

Answer

$ -2 + 9i$

Work Step by Step

Subtract each term of the subtrahend $=3 + 2i - 5 - (-7i) \\=3 + 2i - 5 +7i$ Regroup then simplify by combining like terms to obtain $=(3 - 5) + (2i+7i) \\= -2 + 9i$
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