Question

What are the zeros of the polynomial function? f(x)=x^3−x^2−4x+4

Select each correct answer.


-3
-2
-1
0
1
2
3

Answer 1

-2, 1, 2

Explanation:

Answer 2

Answer: (B) -2, (E) 1, (F) 2

Explanation:

x³ - x² - 4x + 4

= x²(x - 1) - 4(x - 1)

= (x² - 4) (x - 1)

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

Set each factor equal to zero to find the roots:

x - 2 = 0 x + 2 = 0 x - 1 = 0

x = 2 x = -2 x = 1