Answer
$x=6$
Work Step by Step
The given equation is
$x^2+36=12x$
Subtract $12x$ from each side.
$x^2+36-12x=12x-12x$
Simplify.
$x^2+36-12x=0$
$x^2-12x+36=0$
Graph the related function.
$f(x)=x^2-12x+36$
The $x-$intercept is $6$.
Hence, the solution is $x=6$.
