Question

podem me ajudar?

log9 81 = x

Answer 1

Oie, Td Bom?!

$log_{9}(81) = x$

$log_{9}(9 {}^{2} ) = x$

$2 log_{9}(9) = x$

$2 \: . \: 1 = x$

$2 = x$

$x = 2$

Att. Makaveli1996