Question

log (x-1) + log 9 = 9, então x vale :

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{log\:(x + 1) + log\:9 = 9}$

$\mathsf{log\:9.(x + 1) = log\:10^9}$

$\mathsf{9x - 9 = 10^9}$

$\mathsf{9x = 10^9 + 9}$

$\boxed{\boxed{\mathsf{x = \dfrac{1.000.000.009}{9}}}}$