Réponses

  • Utilisateur Brainly
2014-04-27T18:09:07+02:00
factoriser (x +3)au carré -(x+3)(5-x)
=(x+3)²-(x+3)(5-x)
=(x+3)(x+3+x-5)
=(x+3)(2x-2)
=2(x+3)(x-1)
2014-04-27T18:16:55+02:00
(x+3)²-(x+3)(5-x)

(x+3)(x+3)- (x+3)(5-x)

(x+3) [(x+3)-(5-x)]

(x+3) (x+3-5+x)
(x+3) (2x-2)