College

If [tex]$f(x) = 3x^2 - 4x + 2$[/tex], what is [tex]$f(-2)$[/tex]?

A. -18
B. -2
C. 6
D. 22
E. 46

Answer :

To find [tex]\( f(-2) \)[/tex] using the function [tex]\( f(x) = 3x^2 - 4x + 2 \)[/tex], we'll substitute [tex]\(-2\)[/tex] in place of [tex]\(x\)[/tex] and perform the calculations step-by-step.

1. Substitute [tex]\(-2\)[/tex] into the function:
[tex]\[
f(-2) = 3(-2)^2 - 4(-2) + 2
\][/tex]

2. Calculate [tex]\((-2)^2\)[/tex]:
[tex]\[
(-2)^2 = 4
\][/tex]

3. Multiply the square by 3:
[tex]\[
3 \times 4 = 12
\][/tex]

4. Calculate [tex]\(-4 \times (-2)\)[/tex]:
[tex]\[
-4 \times (-2) = 8
\][/tex]

5. Add the remaining terms:
[tex]\[
12 + 8 + 2 = 22
\][/tex]

Thus, the value of [tex]\( f(-2) \)[/tex] is [tex]\( \boxed{22} \)[/tex].

Other Questions