Réponses

  • Utilisateur Brainly
2013-07-12T19:59:47+02:00

B= x³ - x² + x - 1

   =x²'(x-1)+1(x-1)

   =(x²-1)(x-1)

   =(x-1)(x+1)(x-1)

   =(x-1)²(x+1)