Réponse :
Explications étape par étape :
A) 7² = 7x7 = 49
B) 0.8² = 0.8x0.8 = 0.64
C) (-3)^3 = (-3)x(-3)x(-3) = - 27
D) -2^3 = (-2)x(-2)x(-2) = -8
E) 2^7 = 2x2x2x2x2x2x2 = 128
F) (-2)²= (-2)x(-2) = 4
G) 0^7 = 0 car 0x0x0 ... toujours 0
H) (-2)^3 = (-2)x(-2)x(-2) = - 8
