Bonjour,
9* (12-9) (12-9) (12-9) (12-9) (12-9)
= 9* 3*3*3*3*3
= 27*9*9
= 2 187
Bonsoir,
Calculer:
D= 9×(12-9)⁵= 9(3)⁵= 9(3)(3)(3)(3)(3)= 9(243)= 2 187
