Réponses

2014-05-21T16:12:21+02:00
E=(2x+7)(2x-3)
  = 2x²-6x+14x-27
  = 2x²+8x-27

G= 2(2x+7)+2(2x-3)
   =4x+14+(4x-6)
   =4x+14+4x-6
   =8x+8
2014-05-21T16:15:37+02:00
G=2X2x + 2X7 + 2X2x + 2X(-3)
G= 4x +14 + 4x -6
G= 8x + 8

E= 2x X7 +2x X 2x +2x X(-3)
E+ 14x + 4x² -6