Answer
$22.5$
Work Step by Step
Substitute $-2$ to $x$ to obtain:
\begin{align*}
3(-2)^2-5(-2)+\dfrac{1}{-2}&=3(-2)^2-5)(-2)+\dfrac{1}{-2}\\
&=3(4)+10-0.5\\
&=12+10-0.5\\
&=22-0.5\\
&=21.5
\end{align*}
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 1 - Functions and Their Graphs - Section 1.1 Functions - 1.1 Assess Your Understanding - Page 53: 2
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