Réponse:
Bonsoir
A = 3^4 x 5^3
A = 81 x 125
A = 10 125
B = (-2)^3 x 6^2
B = -8 x 36
B = - 288
C = 4^3 / 7^2
C = 64 / 49 = 1,306
D = (-1)^8 / 5^3
D = 1 / 125 = 0,008