Question 76807
{{{sqrt (x^3-x^2) }}} + {{{sqrt (9x-9) }}}
{{{sqrt(x^2(x-1))+sqrt(9(x-1))}}}
{{{sqrt(x^2)*sqrt(x-1)+sqrt(9)*sqrt(x-1)}}}
{{{x*sqrt(x-1)+3sqrt(x-1)}}}
These aren't really like terms, so you can't combine them, but you could factor a little.  I'm not sure if that's what you want.
{{{(x+3)sqrt(x-1)}}}
Happy Calculating!!!!