Answer
No. Check work for reasoning.
Work Step by Step
No, since the denominator does not necessarily have real roots.
In fact, any denominator of form $x^n+c$ where $n$ is even and $c\gt0$ has no real roots.
Calculus 10th Edition
by Larson, Ron; Edwards, Bruce H.
Published by
Brooks Cole
ISBN 10:
1-28505-709-0
ISBN 13:
978-1-28505-709-5
Chapter 1 - Limits and Their Properties - 1.5 Exercises - Page 89: 56
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