Question 83439
{{{sqrt(63)-2*sqrt(28)+5*sqrt(7) }}}
{{{sqrt(9)*sqrt(7)-2*sqrt(4)*sqrt(7)+5*sqrt(7) }}}
{{{3*sqrt(7)-2*2*sqrt(7)+5*sqrt(7) }}}
{{{3*sqrt(7)-4*sqrt(7)+5*sqrt(7) }}}
{{{4*sqrt(7) }}}


R^2 at SCC