Question 54580
{{{sqrt(7)*(2*sqrt(3)+3*sqrt(7))}}}
{{{sqrt(7)*(2*sqrt(3))+sqrt(7)*(3*sqrt(7))}}}
{{{2*sqrt(7*3)+3*sqrt(7*7)}}}  
{{{2*sqrt(21)+3*7}}}
{{{2*sqrt(21)+21}}}  We usually put the squareroot 2nd.
{{{highlight(21+2*sqrt(21))}}}
Happy Calculating!!!