Sagot :
Bonjour,
Il suffit de décomposer au maximum
a = 9 * 17 = 3 * 3 * 17.
b = 4 * 25 = 2 * 2 * 5 * 5.
c = 8 * 9 = 2 * 2 * 2 * 3 * 3.
d = 4 * 25 * 49 = 2 * 2 * 5 * 5 * 7 * 7.
e = 8 * 5 * 81 = 2 * 2 * 2 * 5 * 3 * 3 * 3 * 3.
Réponse:
A. 3x3x17
B.2x2x5x5
C.2x2x2x2x3x3
D.2x2x5x5x7x7
E.2x2x2x2x5x3x3x3x3