Question

2°) Calcule as potências de expoente negativo.
a)8-¹ =
c)-7)-² =
b)(1/5)-² =
d)(-10/3)-³ =​

Answer 1

a)8-¹ = 1/8 = 0.125

c)(-7)-² = 1/(-7)² = 1/49 = 0.02040...

b)(1/5)-² = 1/ (1/5)² = 1/ 1/25 = 25

d)(-10/3)-³ = 1/-(10/3)³ = 1/- 10³/3³ = 1/ - 1000/27 = - 27/1000 = -0.027