Question

Find f(–2) for the function f(x) = 3x2 – 2x + 7. −13 −1 1 23

Answer 1

Answer:

f(-2) = 23

Step-by-step explanation:

$f(x)=3x^2-2x+7\\\\f(-2)\to\text{put x = -2 to the equation of a function:}\\\\f(-2)=3(-2)^2-2(-2)+7=3(4)+4+7=12+4+7=23$

Answer 2

Answer:

The correct option is 4. The value of f(-2) is 23.

Step-by-step explanation:

The given function is

$f(x)=3x^2-2x+7$

We have to find the value of f(-2). It means we need to find the value of function f(x) at x=-2.

Substitute x=-2 in the given function to find the value of f(-2).

$f(-2)=3(-2)^2-2(-2)+7$

On simplification we get

$f(-2)=3(4)-(-4)+7$

$f(-2)=12+4+7$

$f(-2)=23$

The value of f(-2) is 23. Therefore the correct option is 4.