Question 59237
This is an unusual request, I hope I'm understanding what you want with the radicals.
simplify, use only radicals in answer:
{{{sqrt((6x^8y^4)/8)}}}
{{{sqrt((3x^8y^4)/4)}}}  Find your perfect squares
{{{sqrt(3(x^4)^2*(y^2)^2/(2^2))}}}  Take them out
{{{x^4*y^2*sqrt(3)/2}}}
Happy Calculating!!!