Factorize x3 + 2x2 – 4x + 1 using synthetic division method.
Consider p(x) = x3+ 2x2–4x+1
By trial and error method we get x= 1 satisfies the equation.
Therefore (x – 1) is a factor of p(x)
p(x) = (x – 1)(x2+3x−1)