Question

log x = log(x^2 - 12)

Answer 1

Let \(f(x) = e^x\), if you do \(f(x)\) to both sides, you get: \[
f(\log x) = f(\log(x^2-12))
\]\[
x = x^2-12
\]

Answer 2

Forgot I could cancel out the log's, wow. Thanks @wio!