Question

pls answer the question ​

Answer 1

$log_{x}(243) = - 5 \\ 243 = {x}^{ - 5} \\ 243 = \frac{1}{ {x}^{5} } \\ x = \sqrt[5]{ \frac{1}{243} } \\ x = \frac{1}{3}$

hope, it helps