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Question

What is the output of $x^{2} + 3 x + 5$ , where $x$ (variable) = $- 1 ?$

A

$1$

B

$2$

C

$3$

D

$4$

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Solution

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Correct option is C)

$x^{2} + 3 x + 5$
$= (- 1)^{2} + 3 \times (- 1) + 5$
$= 1 - 3 + 5$
$= 6 - 3$
$= 3$

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