Question
If $f(x)=2 x^3-13 x^2+17 x+12$, Find: $f(-3)$

Answer

The given polynomial is $f(x)=2 x^3-13 x^2+17 x+12$
$f(-3)$
we need to substitute the ' $(-3)^{\prime}$ ' in $f(x)$
$f(-3)=2(-3)^3-13(-3)^2+17(-3)+12$
$=(2 \times(-27))-(13 \times 9)-(17 \times 3)+12$
$=-54-117-51+12$
$=-210$
therefore $f(-3)=-210$

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