Question 83550
3b[SQRT(27a^5b)] + 2a[SQRT(3a^3b^3)] 
Simplify the SQRT factors to get:

= 3b[3a^2(sqrt3ab)] + 2a[a^2b^2(sqrt3ab)]
Factor out the common factor of sqrt3ab to get:

= [9a^2 + 2a^3b^2][sqrt3ab]

Cheers,
Stan H.