Question 62976
(x - 1)(x - 2)(x - 4)
(x^2 - 3x + 2)(x - 4)
x^3 - 3x^2 + 2x - 4x^2 + 12x - 8
x^3 -7x^2 + 14x - 8 = f(x)
{{{graph(300,300,-10,10,-20,20,x^3 -7x^2 + 14x - 8)}}}
All values  for x is zero ... so f(0) = - 8
2*f(0) = -16
2x^3 - 14x^2 + 28x - 16 = f(x)
{{{graph(300,300,-10,10,-20,20,2x^3 - 14x^2 + 28x - 16)}}}