You can put this solution on YOUR website! OK. The idea here is to clear the radical in the denominator. We can do this by multiplyinig the numerator and denominator by (sqrt(6)-2)---and we get
{5(sqrt(6)-2)}/{sqrt(6)+2)(sqrt(6)-2)} and this reduces to:
{5(sqrt(6)-2)}/{6-4) further simplifying, we have:
{5sqrt(6)-10}/2 or (5/2)sqrt(6)-5