Réponses

  • Utilisateur Brainly
2013-12-23T10:58:33+01:00
f(x)=(x+2)² -3x(x+2)
   =x²+4x+4-3x²-6x
   =-2x²-2x+4

f(x)=(x+2)² -3x(x+2)

   =(x+2)(x+2-3x)
   =(x+2)(-2x+2)
   =-2(x+2)(x-1)