Question

resolva as potências com expoente negativo abaixo :​

Answer 1

Resposta:

c)

$(\frac{1}{7}) ^{-2}= (\frac{7}{1})^2=7^2=49$

d)

$(\frac{2}{5} )^{-3}=(\frac{5}{2} )^{3}=\frac{5^3}{2^3}=\frac{125}{8}$

e)

$(2)^{-4}=(\frac{1}{2})^4=\frac{1}{2^4}=\frac{1}{16}$

f)

$(\frac{8}{3})^{-3}=(\frac{3}{8})^3=\frac{3^3}{8^3}=\frac{27}{512}$