SOLUTION: I'm having trouble understanding how to solve radicals with roots. I understand the basics til i get up to the {{{ ^3 sqrt 9(x+y)^3 }}} Please explain step by step how to solve

Algebra ->  Radicals -> SOLUTION: I'm having trouble understanding how to solve radicals with roots. I understand the basics til i get up to the {{{ ^3 sqrt 9(x+y)^3 }}} Please explain step by step how to solve      Log On