Réponses

2014-09-08T00:07:12+02:00
Bonsoir

2 x ( 3 x C - 5) - 2 x C + 3
= 2 x (3C - 5) - 2C + 3
= 6C - 10 - 2C + 3
= 4C - 7

Pour C  = -3
On a 4 x(-3) - 7 = - 12 - 7 = - 19