Answer
$-12 + 26i$
Work Step by Step
Subtract each term of the subtrahend
$=15i - 12 - (-11i)
\\=15i -12 + 11i$
Regroup then simplify by combining like terms to obtain
$=-12 + (15i + 11i)
\\= -12 + 26i$
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: 30
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