Question

PLEASE HELP THIS IS THE LAST QUESTION!!
Which of the following represents the zeros of f(x) = x3 − 3x2 − 2x + 6?
−3, −square root of 2, −square root of 2
3, −square root of 2, −square root of 2
−3, square root of 2, square root of 2
3, square root of 2, −square root of 2

Answer 1

The first step is to set the whole equation equal to zero. 
x³-3x²-2x+6=0
then solve for x
x=3, √2,-√2