Answer
$-5-3i$
Work Step by Step
We combine like terms (real and imaginary) and simplify:
$(4-\displaystyle \frac{1}{2}i)-(9+\frac{5}{2}i)$
$(4-9)+(-\frac{1}{2}-\frac{5}{2})i$
$-5-3i$
Calculus 8th Edition
by Stewart, James
Published by
Cengage
ISBN 10:
1285740629
ISBN 13:
978-1-28574-062-1
Appendix G - Complex Numbers - G Exercises - Page A55: 2
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