Question

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

Answer 1

a) (3/7) -2 = (7/3)² = 7²/3² = 49/9

b) (2/5)-1 = (52)¹ = 5/2

c) (1/3)-3 = (3/1)³ = 3³ = 27

d) (-5/4) -3 = (-4/5)³ = -64/125

e) (-1/3)2 = 1/9

f) (-2/5)-3 = (-5/2)³ = -125/8