Question 554986
2 square root sign with a to the 4th power b to the fifth power
{{{2*sqrt(a^4*b^5)}}}
factor inside the radical to reveal some perfect squares
{{{2*sqrt(a^2*a^2*b^2*b^2*b)}}}
extract the square root of those perfect squares
{{{a*a*b*b*2*sqrt(b)}}}
which is
{{{2a^2b^2*sqrt(b)}}}