Question

resolva as equaçoes. (1/5)^x=125​

Answer 1

Explicação passo-a-passo:

$\sf \Big(\dfrac{1}{5}\Big)^x=125$

$\sf \Big(\dfrac{1}{5^1}\Big)^x=5^3$

$\sf (5^{-1})^x=5^3$

$\sf 5^{-x}=5^3$

Igualando os expoentes:

$\sf-x=3~~~\cdot(-1)$

$\sf \red{x=-3}$