225x^4z^4*1/256 + 90x^2y^2z^4*1/16 + 9y^4z^4 - 90x^3z^5...
x^4*y^2+a*y^3*z-b*z^5+c*x^4+d*x^2+x*z^2+x*y^2*z^3-x*z^5...
((((((((x^2+y^2-z^2-(a-0.5))*y)*z)*(x+3))*(x-3))*(y-3))...
x^2+y^2+z^3-z^2-(x^2+y^2-z^3)+(x^2+y^2-z^3*(1-z))
(x^3+y^3-3axy)*(x^3+y^3+3axy)*(x^3-y^3-3axy)*(x^3-y^3+3...
((cos(2*PI/5)*x+cos(2*PI/5)*y-sin(2*PI/5)*z^3-5)*x^3-a)...
x^4*y^2-a*y^5*z+b*x*z^2-c*y^4*z+d*x^2*y^3*z+x^2*y^2-x*z...
(x^2+y^2)^3-4*x^2*y^2*(z^2+1)*((x^2+y^2+z^2-a^2-b-c^5)*...
[(x^2+y^2)^4-(x²-y²)^2+128z^8]*[[y²+z²)^4-(y²-z²)...