Question

16- Calcule as potências:

a) (-2)^-2

b)5^-3

c) 2^-1

d)(-4)^-3

Answer 1

A) (-2)^-2

1/(-2)^2

R : 1/4

B)5^-3

1/5^3

R : 1/125

C)2^-1

R : 1/2

D) (-4)^-3

1/-4^3

R : 1/-64