1) B
2) C
3) C
4) A
5) C
6) B
7) C
8) C
9) A
10) B
11) A
Explications :
2: 5x5x5x5x5x5 = 5^6
3: (-10) x (-10) = 100
4: -10 x -10 = - 100
5: 2^6 = 2x2x2x2x2x2 = 64
6: 2,5^2= 2,5 x 2, 5= 6,25
7:(-1)^6= (-1) x (-1) x(-1) x (-1) x (-1) x (-1) = 1 car 6 est pair
11: (-1)^9= (-1) x (-1) x(-1) x (-1) x (-1) x (-1) x (-1) x (-1) = -1 car 9 est impair
