Réponse :
Bonjour
Explications étape par étape :
A = 9/24
A = 3^2/(3*2^3)
A = 2^-3 * 3
B = 28^2/32
B = 2^2 * 7 / 2^5
B = 2^-3 * 7
C = 81 * 6^4 / 27^2 * 7^5
C = (3^4 * 3^4 * 2^4) / (3^2 * 3^2 * 3^2 * 7^5)
C = (3^8 * 2^4 )/ (3^6 * 7^5)
C = 2^4 * 3^2 * 7^-5
D = 38^2 * 11 / 6^5 * 4^4 * 19
D = (2^2 * 19^2 * 11)/(2^5 * 3^5 * 2^4 * 2^4 * 19)
D = (2^2 * 19^2 * 11) / ( 2^13 * 3^5 * 19)
D = 2^-11 * 3^-5 * 11 * 19
