Réponses

Meilleure réponse !
2014-02-25T13:36:23+01:00
[ (2x+1)+(x+3)]2 = [2x+1+x+3]2 = (3x+4)2 =6x+8
2014-02-25T13:40:03+01:00
[ (2x+1)+(x+3)]2 = (2x+1+x+3)*2 = (3x+4)*2 =6x+8