Answer
Domain: all real numbers except $x=-\frac{2}{5}$
Work Step by Step
$\frac{4x^3}{2+5x}$
The denominator must be different from $0$.
$2+5x\ne0$
$5x\ne-2$
$x\ne\frac{-2}{5}$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 4 - Review Exercises - Page 352: 2
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