Question 746708
What?


An equation must be stated as something is equal to something.  A function would be given a name and then equated to an expression.  The polynomial alone as given is not enough.  Do you want the function, or do you want the quadratic expression equal to 0 or some constant?


The given expression appears to be for a circle.  Is the expression equal to 0?


Best guess, {{{x^2+y^2-36=0}}}
{{{x^2+y^2=36}}}
{{{x^2+y^2=6^2}}}
which would be a circle centered at the origin, with radius 6 units.