#### Answer

$\text{complex conjugates}$

#### Work Step by Step

RECALL:
$a+bi$ and $-bi$ are complex conjugates.
Thus, the missing expression in the given statement is:
$\text{complex conjugates}$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$\text{complex conjugates}$

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