Question 757133
{{{6+2n-n^2=0}}}


{{{(-1)(-n^2+2n+6)=0*(-1)}}}
{{{n^2-2n-6=0}}} not factorable.


Use solution to quadratic equation:
{{{n=(2+-sqrt(4-2(-6)))/2}}}
{{{n=(2+-sqrt(16))/2}}}
{{{n=(2+- 4)/2}}}


{{{n=-1}}} or {{{n=3}}}