Réponses

Meilleure réponse !
2014-09-19T18:40:37+02:00
A = 6 b = - 2 c = 5
a - bc = 6 - ( - 2 x 5) = 6 - ( - 10) = 6 + 10 = 16

c (a + b) = 6 (- 2 + 5) = - 12 + 30 = 28

a - b - c = 6 - (- 2) - 5 = 6 + 2 - 5 = 8 - 5 = 3