Question

log x + log (x − 5) = log 36

Answer 1

$log(x) + log(x - 5) = log(36) \\ \\ log((x)(x - 5)) = log(36) \\ \\ x(x - 5) = 9 \times4 \\ \\ x = 4 \\ \\ x(x - 5) = - 4 \times - 9 \\ \\ x = - 4$