Question 793962
Your problem does not display as you intended.
I am answering what I guess was your question.
{{{root(3,2)+8root(3,16)-2root(3,54)}}}={{{root(3,2)+8root(3,2^3*2)-2root(3,3^3*2)}}}={{{root(3,2)+8root(3,2^3)*root(3,2)-2root(3,3^3)*root(3,2)}}}={{{ root(3,2)+8*2root(3,2)-2*3root(3,2) }}}={{{root(3,2)+16root(3,2)-6root(3,2)=11root(3,2)}}}