Réponses

  • Utilisateur Brainly
2014-09-07T11:17:14+02:00
A= 3*(-2) + 6
A= - 6 + 6
A= 0

B= - 5*(- 2) - 6 - 3
B= 10 - 6 - 3
B= 1

C= 2 - (- 2 * 6)
C= 2 + 12
C= 14
2014-09-07T11:18:28+02:00
Calculer chaque expression 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 - 6 - 3
B = 10 - 9
B = 1

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