Question 8439
{{{x^3-2x^2-4x+8}}}
 = (x^3-2x^2) - 4x + 8
 = x^2(x-2) - 4(x-2)
 = (x-2)(x^2 - 4)
 = (x-2)(x-2)(x+2)
 = (x-2)^2(x+2)

 Kenny