All solutions of the following equation: "(Enter all answers including repetitions)"
x^3 - 4x^2 - 11x - 6 = 0
In my mind, the solutions should be -1 and 6, since the equation can be factored into (x+1)(x-6)(x+1). Yet both "-1, 6" and "6, -1" are marked false. What am I overlooking here?