Answer
See below.
Work Step by Step
In the first step $4$ should become $\frac{4}{x^3}$ in the denominator because all terms have to be divided by $x^3$.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Prerequisites - P.5 - Rational Expressions - Exercises - Page 48: 31
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