Réponses

  • Utilisateur Brainly
2014-04-21T11:07:17+02:00
A =(x-2)(x+3)+(x-2)(x+6)
   =(x-2)(x+3+x+6)
   =(x-2)(2x+9)

B=(x+5)(4x-2)-(x+5)(9x+1)
   =(x+5)(4x-2-9x-1)
   =(x+5)(-5x-3)

C=2x(5x-8)-(3x+1)(5x-8)

  =(5x-8)(2x-3x-1)
  =(5x-8)(-x-1)