Question

Equação exponencial: 3^x=1/81

Answer 1

$3^x = \frac{1}{81}$

$3^x = \frac{1}{9^2}$

$3^x = \frac{1}{(3^2)^2}$

$3^x = \frac{1}{3^4}$

$3^x = 3^-4$

x = -4