What is a cubic polynomial function in standard form with zeros 1, - 2, and 2?

A. = x3 + x2 - 3x + 4

B. = x3 + x2 - 4x - 2

C. = x3 + x2 + 4x + 4

D. = x3 - x2 - 4x + 4

X = 1 means that one of the factors is x - 1 = 0

x = - 2 means that one of the factors is x + 2 = 0

x = 2 means that one of the factors is x - 2 = 0

(x - 1) (x - 2) (x + 2) = 0

(x - 1) (x^2 - 4) = 0

x^3 - x^2 - 4x + 4 = 0

Your answer is D