Question 375716
{{{x^2(y^2-4)=4}}}
{{{y^2-4=4/x^2}}}
{{{y^2=4/x^2+4}}}
{{{y=0 +- sqrt(4/x^2+4)}}}
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{{{drawing(300,300,-10,10,-10,10,grid(1),graph(300,300,-10,10,-10,10,0,sqrt(4/x^2+4)),graph(300,300,-10,10,-10,10,0,-sqrt(4/x^2+4)))}}}