Réponses

2013-10-30T17:38:07+01:00
(3x+9) (-x+2) - (x+3)²=0
-3(x+3)(x-2)-(x+3)(x+3)=0
(x+3)(-3x+6-x-3)=0
(x+3)(3-4x)=0
x=-3 ou x=3/4