I am having some trouble with this one. I think exponentiation would work but i can't seem to get it right. the answer is x=36. could someone show an intermediate step so i can see which form, radical or fractional exponent to use. thanks.

$\displaystyle

{x}^{\frac {1} {2}}-6{x}^{\frac {-1}{2}}-5=0

$

$\displaystyle

\sqrt {x}-6\,{\frac {1} {\sqrt {x}}}}-5=0}

$