Réponses

2013-09-13T14:13:50+02:00
-2(x²+2/-2x)+5
-2((x+2/2*2)²-2²/4*2²)+5
-2((x+2/4)²-2²-4*-2*5/4*-2²
-2(x+2/4)²-36/-16