Respuestas

2014-03-10T17:16:39+01:00
(x-3)^2 * (x+3)^2=0
  ________________
V
(x-3)^2 * (x+3)^2=0
(x-3) (x+3) =0
x^2 + 3x -3x -9 =0
x^2 -9 =0
   ___       ____
V  x^2 = V  9
     x = 3


x(x-4)^2 * (x+3)^2=0
  _____________________
V (x^2 -4x ) ^2 (x+3)^2 = 0
(x^2 -4x) (x+3) =0
x^3 +3x^2 -4x^2 -12x=0
x^3 -x^2 -12x =0