Réponses

2014-04-03T08:35:23+02:00
Salut :)

D = (2/3)² x 3 - (2 - 1/3)²
D = (2/3) x (2/3) x 3 - (2 x 3/1 x 3 - 1/3)²
D = 4/9 x 3 - (6/3 - 1/3)²
D = 12/9 - (5/3)²
D = 12/9 - (5/3) x (5/3)
D = 12/9 - 25/9
D = -13/9

J'espère t'avoir aidé(e)! :)

Meilleure réponse !
2014-04-03T08:52:22+02:00