Question

F(x)=x2–5x+7, find f(3)

Answer 1

`f(3) = 1`

Explanation:

f(x) = x² - 5x + 7

To find f(3) substitute the value of x that's 3 into f(x) that's replace every x in f (x) by 3

We have

`f(3) = {3}^(2) - 5(3) + 7 \\ = 9 - 15 + 7 \\ = - 6 + 7`

We have the final answer as

`f(3) = 1`

Hope this helps you