Tutorial Exercise Find a formula for a cubic function fif f(2) = 24 and f(-2) = f(0) = f(3) = 0. Step 1 A cubic function generally has the form f(x) = ax + bx2 + cx + d. If we know that for some x-value x = p we have f(p) Since we are told that f(3) = 0, we know that -4x - 4x2 is a factor