Question

calcule a potência de (4/5)^-3

Answer 1

Olá, vamos lá!

$\dfrac{4}{5}^{-3} = \dfrac{1}{ \frac{4}{5}^3} = \dfrac{1}{0,8^{3}} = \dfrac{1}{0,512} = 1,953125$

Qualquer dúvida comente ;)
Bons estudos!

Answer 2

Olá

$\dfrac{4^{-3}}{5^{-3}}$

$\dfrac{\dfrac{1}{4^{3}}}{\dfrac{1}{5^{3}}}$

$\dfrac{\dfrac{1}{64}}{\dfrac{1}{125}}$

Usando
$\dfrac{a.d}{b.c}$, temos

$\dfrac{1.125}{64.1}$

$\dfrac{125}{64}$

$1,953125$

Resposta:
$S = {(1,953125)}$