Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 7 - Section 7.7 - Complex Numbers - Concept and Vocabulary Check - Page 569: 9



Work Step by Step

To divide two complex numbers, multiply the numerator and the denominator by the conjugate of the denominator. The denominator is $4i$, which can be written as $0+4i$. The conjuagte of this complex number is $0-4i$ or $-4i$. Thus, the missing expression in the given statement the conjugate of the denominator which is: $-4i$
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