Question 1043972
Numbers x and y follow through your description to give this system:
{{{system(xy=-110,x+y=-30)}}}



{{{y=-x-30}}}
-
{{{x(-x-30)=-110}}}
{{{-x^2-30x=-110}}}
{{{x^2+30x=110}}}
{{{x^2+30x-110=0}}}


Discriminant:  {{{30^2-4*1*(-110)=900+440=1340}}}
which is {{{2*67*2*5=2*2*5*67}}};


{{{highlight(x=(-30+- 2sqrt(5*67))/2)}}}
You can find the y value corresponding to each of these x values.