Question 30250
x^2+y^2=13 is circle, centre the origin
-x^2+2y^2=14 is a hyperbola, centre the origin
{{{ graph( 300, 200, -4, 4, -5, 5, sqrt(13-x^2), -sqrt(13-x^2), sqrt(7+x^2/2), -sqrt(7+x^2/2)) }}} 
As you can see there are 4 solutions
Ans:e
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