Answer:
x(x + 3)(x + 1)(x - 1)
Step-by-step explanation:
f(-3) = 0 ⇒ (x + 3) is a factor
f(-1)= 0 ⇒ (x + 1) is a factor
f(0) = 0 ⇒ (x + 0) is a factor
f(1) = 0 ⇒ (x -1) is a factor
f(x) as a product of linear factors
