Réponse :
Bonjour
Explications étape par étape :
A = 18 + 2 X 6²
A = 18 + 2 X 36
A = 18 + 72
A = 90
B = ( 18 + 2 X 6)²
B = ( 18 + 12)²
B = 30² = 900
Exercice 57
E = 5 X 10³ - 2³
E = 5 X 1 000 - 8
E = 5 000 -8
E = 4 992
F = 5 X ( 10³ - 2³)
F = 5 X (1 000 - 8)
F = 5 X 992
F = 4 960
G = 5 X ( 10 -2)³
G = 5 X ( 8)³
G = 5 X 512
G = 2 560
