Answer
12-7i
Work Step by Step
The conjugate of a complex number a+bi is a-bi.
Using this we can say that the conjugate of 12+7i = 12-7i
Calculus: Early Transcendentals 8th Edition
by Stewart, James
Published by
Cengage Learning
ISBN 10:
1285741552
ISBN 13:
978-1-28574-155-0
APPENDIX H - Complex Numbers - H Exercises - Page A 64: 5
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