Answer
$-x+3+\frac{2}{x^2}$
Work Step by Step
Using the fact that $$(\frac{a}{b})^n=\frac{a^n}{b^n}$$ $(\frac{1}{x})^2=\frac{1^2}{x^2}=\frac{1}{x^2}$. The expression is simplified to $3+\frac{2}{x^2}-x$, or $-x+3+\frac{2}{x^2}$.
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 2 - Functions - 2.1 Input and Output - Exercises and Problems for Section 2.1 - Skill Refresher - Page 75: S6
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