Question

F(x)=2x2+2x-3, find f(4)

Answer 1

The answer is

`f(4) = 37`

Explanation:

`f(x) = {2x}^(2) + 2x - 3`

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

That's

`f(4) = 2 ({4})^(2) + 2(4) - 3 \\ = 2(16) + 8 - 3 \\ = 32 + 5 \\ = 37 \: \: \: \: \: \: \: \:`

We have the final answer as

`f(4) = 37 \\`

Hope this helps you