Question

evaluating a quadratic function using an equation\find $f(-2)$ for the function $f(x) = 3x^2 - 2x + 7$.

Explanation:

Step1: Substitute $x=-2$ into function

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

Step2: Calculate squared term

$(-2)^2=4$, so $3\times4=12$

Step3: Calculate linear term

$-2(-2)=4$

Step4: Sum all terms

$12 + 4 + 7=23$

Answer:

23