Answer
Conjugate
Work Step by Step
Look at conjugates on page 297. If a polynomial has real coefficients and it has a complex root a+bi then a-bi must also be its root.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 3 - 3.4 - Zeroes of Polynomial Functions - 3.4 Exercises - Page 283: 4
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