Question

$logx81 = - 4$
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Answer 1

$log_{x}(81) = - 4 \\ = > 81 = {x}^{ - 4} \\ = > {3}^{4} = \frac{1}{ {x}^{4} } \\ = > {x}^{4} = { (\frac{1}{3}) }^{4} \\ = > x = \frac{1}{3} \\ - - - - - - - - - - - - - - - - \\ the \: formulas \: we \: used \: \\ log_{ \alpha }( \beta ) = x \\ = > it \: implies \: \alpha = { \beta }^{x} \\ \\ = = = = = = = = = = = = = = = = = = = = = \\ hope \: it \: helps \: \\ if \: u \: understand \: this \: solution \: mark \: as \: brainliest \:$