Question

Given the function rule f(x) = x^2 - 3x + 2, what is the output of f(-2)

Answer 1

f(-2) = -2 ^ 2 - 3 * -2 + 2
f(-2) = 4 - (-6) + 2
f(-2) = 10 + 2
f(-2) = 12

Answer 2

The output value of f(-2) is, 14

Explanation:

Given the function:

`f(x) = x^2-3x+2` ......[1]

We have to find the output of f(-2).

Substitute x = -2 in [1] we have;

`f(-2) = (-2)^2-3(-2)+2`

⇒
`f(-2) = 4+6+2`

Simplify:

`f(-2) = 12`

therefore, the output value of f(-2) is, 12