Question

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

Resposta:

Explicação passo-a-passo:

Answer 2

Resposta:

Explicação passo-a-passo:

a.(3/7)^-2=

(7/3)^2=

49/9

b.(2/5)^-1=

(5/2)^1=

5/2

c.(1/3)^-3=

(3/1)^3=27/1=

27

d.(-5/4)^-3=

(-4/5)^3=

-64/125

e.(-1/3)^-2=

(-3/1)^2=

9/1=

9

f.(-2/5)^-3=

(-5/2)^3=

-125/8