Question 599723
{{{sqrt((12(x+4)^9))}}} 
Perhaps we can factor to reveal some perfect squares. 
{{{sqrt((4*3*(x+4)^2*(x+4)^2*(x+4)^2*(x+4)^2*(x+4)))}}}
Extract the square root of each square
{{{2(x+4)(x+4)(x+4)(x+4)*sqrt(3(x+4))}}}
which is 
{{{2(x+4)^4*sqrt(3(x+4))}}}