Question

Calcule as potências :
a) (+3/7)-² =
b) (2/5)-¹ =
c) (-1/3)-³ =
d) (-5/4)-³ =
e) (-0,5)-³ =​

Answer 1

a) 9/49
b) 2/5
c) -1/27
d)-125/64
e) -0,125