How do you find the zeros of a function #f(x)= 2x^3 - 3x^2- 12x +20#?
First, factor the function.
Usually, try simple small numbers as real roots: 1, or -1, or 2.
f(2) = 16 - 12 - 24 + 20 = 36 - 36 = 0, then the function has (x - 2) as a
factor. Next, you may algebraically divide or guess.
Use the new AC Method to factor the trinomial.
The Zeros are: x = 2 (double root);