Answer
$-1 - 7i$
Work Step by Step
Subtract each term of the subtrahend
$=9 - 4i - 10 - 3i$
Regroup then simplify by combining like terms to obtain
$=(9 - 10) + (-4i-3i)
\\= -1 + (-7i)
\\=-1 - 7i$
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: 23
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