Question 939564
Find the roots.
Find the sum of them.


{{{(4+- sqrt(16+4*3*5))/(2*3)}}}


{{{(4+- sqrt(16+60))/6}}}


{{{(4+- sqrt(76))/6}}}


{{{(4+- 2sqrt(19))/6}}}


{{{(2+- sqrt(19))/3}}}


----


{{{(2-sqrt(19)+2+sqrt(19))/3}}}


{{{highlight(4/3)}}}


NOTE:  You can derive a formula for the question generally!