Posted by Ashley on Monday, April 26, 2010 at 2:21am.
(x+2)(x)(x-2)(x-4) = 0 in factored form. That can be multiplied out to give: x*(x^2 -4)(x-4) = 0 [x^3 -4x^2 -4x +16]x = 0 x^4 -4x^3 -4x^2 +16x = 0