Find the Excluded Values ((x-4)^2)/((x-9)^2)

$\frac{{(x - 4)}^{2}}{{(x - 9)}^{2}}$

Set the denominator in $\frac{{(x - 4)}^{2}}{{(x - 9)}^{2}}$ equal to $0$ to find where the expression is undefined.

${(x - 9)}^{2} = 0$