Réponses

2016-03-13T13:39:20+01:00
Bonjour,

C= 3x + 2 + 2x (3x + 2)
C = (2x + 1) (3x + 2)

D= (x + 9) (x + 6) + x + 9
D = (x + 7) (x + 9)

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