Ok, I am stuck on this problem. Here is what I have done so far:

$\displaystyle

\frac{\sqrt(x)-2}{x-4}

$

$\displaystyle

= \frac{\sqrt(x) -2}{x-4} = \frac{\sqrt(x) + 2}{\sqrt(x)+2} =

$

$\displaystyle

\frac{x-2}{(x-4)(\sqrt(x)+2)}

$

Ok, here I do not remember the algebra to simplify this denominator.

help?