Question

Evaluate the function for the given value. If f(x) = -3x2 – 8, then f(-4)= ?

Answer 1

Answer:

The answer is

$f( - 4) = - 56$

Step-by-step explanation:

$f(x) = - 3 {x}^{2} - 8$

To find f(-4) , substitute the value of x that's - 4 into f(x). That is for every x in f(x) , replace it with - 4

We have

$f( - 4) = - 3 ({ - 4})^{2} - 8 \\ = - 3(16) - 8 \\ = - 48 - 8 \: \: \: \: \:$

We have the final answer as

$f( - 4) = - 56$

Hope this helps you