Réponses

Meilleure réponse !
2014-09-29T19:48:37+02:00
Développement
(2x-3)(x+2)-5(2x-3)
(2x² +4x -3x -6) -10x +15
2x² +x -6 -10x +15
2x² -9x +9

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

2014-09-29T19:53:53+02:00
E= (2x - 3)(x+2)-5(2x-3)
E = (2x
²-3x+4x-6) - (10x-15)
E = 2x
² + x - 6 - 10x + 15
E = 2x
² - 9x + 9

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