Réponses

2014-04-30T14:31:36+02:00
Salut :)

D = 4yz-4(y - z)
D = 4 x 3 x 2 - 4(3 - 2)
D = 24 - 4 x 1
D = 24 - 4
D = 20

E = (y+z)(y-z)
E = (3 + 2)(3 - 2)
E = 6 x 1
E = 6

F = (y+z)-(y-z)

F = (3 + 2) - (3 - 2)
F = 5 - 1
F = 4

J'espère t'avoir aidé(e) ! :)