Question 742959
Never leave a radical (in this case a square root or 1/2 power) in the denominator.  Multiply the fraction by the denominator over itself.<P>
{{{(1/(x^(1/2))) * ((x^(1/2))/(x^(1/2))) = (x^(1/2))/x}}}<P>
For {{{1/x^(-1/2)}}}  remember that {{{1/x^(-a) = x^a}}}<P>
{{{1/x^(-1/2) = x^(1/2)}}}