If $P (x) = 2 x^{2} - 3 x + 4,$ , then $P (- 1)$ is equal to?

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Solution

$P (x) = 2 x^{2} - 3 x + 4$
Then $P (- 1) = 2 (- 1)^{2} - 3 (- 1) + 4$
$= 9$

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