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
$=(3 - 5) + (2i+7i)
\\= -2 + 9i$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
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
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