Answer
$x^2(x^2+1)^{-5}-(x^2+1)^{-4}=-(x^2+1)^{-5}$
Work Step by Step
$x^2(x^2+1)^{-5}-(x^2+1)^{-4}=x^2(x^2+1)^{-5}-(x^2+1)^{-5+1}=x^2(x^2+1)^{-5}-(x^2+1)^{-5}(x^2+1)=(x^2+1)^{-5}(x^2-x^2-1)=-(x^2+1)^{-5}$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Appendix A - A Exercises - Page A6: 14
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