Réponses

2014-09-09T16:38:57+02:00
Pour a = -2 et b = 6 :

A = 3a+b
A = 3*(-2)+6
A = -6+6
A = 0

B = 5a-b-3
B = 5*(-2)-6-3
B = -10-9
B = -19

C = 2-ab
C = 2-(-2)*(6)
C = 2-(-12)
C = 2+12
C = 14