Réponse:
Exercice 1 :
a) A = 12 + 3( + 2)
A = 12 + 6
A = 18
b) B = 4 + 4( + 3) + 2(2 + )
B = 4 + 12 + 4
B = 20
c) C = - 8 + 2(2 + 4 + 3)
C = - 8 + 2 × 9
C = - 8 + 18
C = 10
Exercice 2 :
a) 7 × 7 × 7 × 7 × 7 = 7^5
b) (-2) × (-2) × (-2) = -2^3
c) 1,3 × 1,3 × 1,3 × 1,3 = 1,3^4
d) 100 × 10 × 10 × 10 × 10 × 10 × 10 = 10^8