Jawab dengan caranya dong

y' = 3x^2 - 24x + 45
0 = x^2 - 8x + 15
x = 3 v x = 5

y = 3^3 - 12(3)^2 + 45(3) + 6 = 60
y = 5^3 - 12(5)^2 + 45(5) + 6 = 56

(3, 60) dan (5, 56) (A) -> Jawab

y = x^3 - 12x^2 + 45x + 6
y' = 3x^2 - 24x + 45 = 0 =====> bagi 3
=> x^2 - 8x + 15 = 0
=> (x - 3)(x - 5) = 0
=> x = 3 atau x = 5

x = 3
y = 3^3 - 12(3)^2 + 45(3) + 6 = 27 - 108 + 135 + 6 = 60
(3, 60)

x = 5
y = 5^3 - 12(5)^2 + 45(5) + 6 = 125 - 300 + 225 + 6 = 56
(5, 56)