Réponses

  • Utilisateur Brainly
2014-03-24T20:49:14+01:00
B=2(3x-5)
   =6x-10

C=4a(2a-3b)
  =8a²-12ab

D=x(x+3)-(-2x+x²)

  =x²+3x+2x-x²
  =5x
2014-03-24T20:49:42+01:00
Bonsoir

B=2(3x-5) = 6x -10
 C=4a(2a-3b) = 8a² - 12ab
 D=x(x+3)-(-2x+x²)
= x² +3x +2x -x² = 5x