Find the factors of the expression x3-3x2-x+3
A
(x-3)(x-1)2
B
(x+3)(x+1)2
C
(x-3(x-1)
D
(x+3)9x-1)9x+1)
Correct Answer: (x-3(x-1)
x3 - 3x2 - x + 3 = x2(x - 3) - 1(x - 3) = (x - 3)(x2 - 1) = (x - 3)(x + 1)(x - 1)