Question

Given ƒ(x) = 4x² – 4x – 20, find ƒ(10)

Answer 1

f(10) = 340

Explanation:

to find f(10) substitute x = 10 into f(x) , that is

f(10)

= 4(10)² - 4(10) - 20

= 4(100) - 40 - 20

= 400 - 60

= 340