Question 1060871

Can you help me please . Express radical 84 over 2 radical 3 in simplest radical form 
<pre>{{{sqrt(84)/(2 * sqrt(3))}}}
{{{(sqrt(84) * sqrt(3))/(2 * sqrt(3) * sqrt(3))}}} ------ Multiplying DENOMINATOR and NUMERATOR by {{{sqrt(3)}}}
{{{sqrt(252)/6}}} =====> {{{sqrt(36 * 7)/6}}} =====> {{{6sqrt(7)/6}}} =====> {{{cross(6)sqrt(7)/cross(6)}}} =====> {{{highlight_green(sqrt(7))}}}