Question

What are all the roots of the function f(x) = x³ - 9x² + 26x - 24? Use the remainder theorem.
1) x = 2, x = 3, or x = 4
2) x = -2, x = -3, or x = -4
3) x = 1, x = 2, x = 3, or x = 13
4) x = -1, x = -2, x = -3, or x = -13