Réponses

  • Utilisateur Brainly
2013-10-27T18:05:57+01:00
factoriser (x-1)(4x+5)-(x-1)²
=(x-1)(4x+5-x+1)
=(x-1)(3x+6)
=3(x-1)(x+2)
2013-10-27T18:58:51+01:00
(x-1)(4x+5)-(x-1)²
=
(x-1)(4x+5)-(x-1)(x-1)
=(x-1)(4x+5-x+1)
=(x-1)(3x+6)