Question 347532
I think you mean quadratic formula. 
{{{y = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{y = (-6 +- sqrt( 6^2-4*1*6 ))/(2*1) }}} 
{{{y = (-6 +- sqrt( 36-12 ))/2 }}} 
{{{y = (-6 +- sqrt( 24))/2 }}}
{{{y = (-6 +- 2sqrt( 6))/2 }}}
{{{highlight(y = -3 +- sqrt( 6)) }}}