How do you find the zeros of the function #F(x)=x^3-3x^2+4x-2#?
May 12, 2015
When a + b + c + d = 0, then the function has (x - 1) as a factor.
Since the trinomial in parentheses can't be factored (D = -4 < 0),
then there is one unique zero: x = 1.