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Factorization Of Polynomials — Maths STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9MathsFactorization Of Polynomials2 Marks
Question
If f(x) =$2x^3 - 13x^2 + 17x + 12$, Find:
$f(-3)$
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Answer

The given polynomial is f(x) = $2x^3 - 13x^2 + 17x + 12$
$f(-3)$
we need to substitute the $'(-3)'$ 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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