Answer
$x=0$
$x=\frac{3}{5}$
$x=-\frac{3}{5}$
Work Step by Step
$f(x)=0$
$-25x^4+9x^2=0$
$x^2(-25x^2+9)=0$
$x^2=0$
$x=0$
or
$-25x^2+9=0$
$-25x^2=-9$
$x^2=\frac{9}{25}$
$x=±\frac{3}{5}$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 2 - 2.3 - Analyzing Graphs of Functions - 2.3 Exercises - Page 194: 22
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