Question

log (x-8)=2 PRECISO URGENTE
2

Answer 1

→ Lembrete:

⇒ $\log _b\left(a\right)=c$ ↔ $b^c=a$
==========
$\log _2\left(x-8\right)=2\\2^2=x-8\\4=x-8\\x=4+8\\\boxed{\bold{x=12}}$