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Finding the Square of a Number

If f x = x ...

Question

If $f (x) = x^{3} - 6 x^{2} + 9 x + 3$ then $f (2)$ is equal to

A

4

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B

6

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C

3

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D

5

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Solution

The correct option is D $5$

Given

$f (x) = x^{3} - 6 x^{2} + 9 x + 3$

$f (2) = 2^{3} - 6 (2)^{2} + 9 (2) + 3$

$⟹ 8 - 6 (4) + 18 + 3$

$⟹ 8 - 24 + 18 + 3$

$⟹ 5$

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Similar questions

f (x) = x^{3} - 6 x^{2} + 9 x + 3

f (2)

f (x) = x^{3} - 6 x^{2} + 6 x

f (2^{1 / 3} + 2^{2 / 3} + 2)

f (x) = \frac{9^{x}}{9^{x} + 3}

f (\frac{1}{2012}) + f (\frac{2}{2012}) + . . . . + f (\frac{2011}{2012})

f (x) = x^{3} - 6 x^{2} + 9 x + 8

f (x)

is strictly decreasing in

f (x) = {\begin{matrix} x^{3} - 3 x + 2 x < 2 x^{3} - 6 x^{2} + 9 x + 2, x \geq 2 \end{matrix}

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