Question 74974
   sqrt 9y^2 + sqrt 54y^2
{{{sqrt(9y^2)+sqrt(54y^2)}}}
{{{sqrt(9y^2)+sqrt(9y^2)*sqrt(6)}}}
{{{3y+3y*sqrt(6)}}}
some books and teachers make you say it like this when they don't specify that the variables can be assumed to be non-negative:
{{{3*abs(y)+3*abs(y)sqrt(6)}}}
If it said simplify, you're done.
If you're supposed to factor:
{{{3y(1+sqrt(6))}}}
or
{{{3*abs(y)(1+sqrt(6))}}}
Happy Calculating!!!!