Question

Please give an explanation.
​

Answer 1

Replace the variable x with -4 in the expression.

f (- 4) = 3(- 4)^2 - (- 4) + 23

Simplify each term.

f (- 4) = 48 + 4 + 23

Simplify by adding numbers.

f (- 4) = 75

The final answer is 75.