Réponses

2013-10-12T18:11:36+02:00
C = (3x+5)²-(x+1)(3x+5)+3x+5
tu isoles (3x+5) ce qui te donne
(3x+5)(3x+5)-(x+1)+1
(3x+5)(3x+5-x-1+1)
(3x+5)(2x+5)
2013-10-12T18:20:50+02:00