Réponses

Meilleure réponse !
2014-09-21T19:30:52+02:00
A = 3 b = -4 C=-5 D=7
G = ac - bd
G = 3 x - 5 -(- 4 x 7)
G = - 15 - (- 28)
G = - 15 + 28
G = 13

H = - 5ac +bd

H = - 5 x (3 x - 5) + (- 4 x 7)
H = - 5 x - 15 - 28
H = 75 - 28
H = 47