Answer
$P(-4)=0$
Work Step by Step
Substituting $x=-4$ in $
P(x)=2x^2+5x-12
$, results to
\begin{align*}
P(-4)&=
2(-4)^2+5(-4)-12
\\&=
2(16)+5(-4)-12
\\&=
32-20-12
\\&=
0
.\end{align*}
Hence, $P(-4)=0$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Appendix - Synthetic Division - Exercises - Page 646: 35
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