Question 121108
Enter it like this: sqrt(#)
{{{sqrt(63) - sqrt(28) + 5*sqrt(7)}}}
{{{sqrt(9*7) - sqrt(4*7) + 5*sqrt(7)}}}
{{{sqrt(9)*sqrt(7) - sqrt(4)* sqrt(7) + 5*sqrt(7)}}}
factor out {{{sqrt(7)}}} from each term
{{{sqrt(7)*(3 - 2 + 5)}}}
{{{6*sqrt(7)}}}
Thats it, unless I goofed