Answer
Even
Work Step by Step
We have $f(-x) =(-x)^4-20(-x)^2$
or, $=x^4-20x^2$
Thus, $f(-x) =f(x)$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 2 - Review Exercises - Page 234: 40
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