Réponse :
Explications étape par étape
Écriture décimale :
5^(-1) + 0,2 = 1/5 + 2/10 = 2/10 + 2/10 = 4/10 = 0,4
2^(-2) + 2^2 = 1/2^2 + 4 = 1/4 + 16/4 = 17/4 = 4,25
41^0 + 3^4 = 1 + 81 = 82
7^0 x 2^(-1) = 1 x 1/2 = 1/2 = 0,5
2^(-3) x 8 = 1/2^3 x 8 = 1/8 x 8 = 1
3^(-1) x 3 = 1/3 x 3 = 1
4^(-2) : 2 = 1/4^2 x 1/2 = 1/32 = 0,03125
-2^(-4) : (-1) = -1/2^4 x -1 = 1/16 = 0,0625
(-2)^(-4) x 2 = 1/2^4 x 2 = 2/2^4 = 1/2^3 = 1/8 = 0,125
