Question

Log de 8 na base x igual a menos 3.

Answer 1

$\log_x8=-3\\x^{-3}=8$

$\frac{1}{x^3}=8$

$x^3=\frac{1}{8}$

$x=\sqrt[3]{\frac{1}{8} }$

$x=\frac{1}{2}$