Question

What are the zeros of the function?

f(x)=x^3−2x^2−3x
A
-3, 0, and 1
B
−3, 0, and 2
C
−1, 0, and 3
D
−2, 0, and 3

Answer 1

f(x) factors as
  f(x) = x(x+1)(x-3)
so has zeros of x = -1, 0, 3, because these values make the factors be zero.

The appropriate choice is ...
  C. -1, 0, and 3