Question 1139408
{{{system(4x^2-2y^2=4,x^2+y^2=10)}}}


{{{system(2x^2-y^2=2,x^2+y^2=10)}}}


ADD:   {{{3x^2=12}}}

{{{x^2=4}}}

{{{system(x=-2,or,x=2)}}}, and finding y should be fairly easy from here.