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(x^2+y^2+z^2-1)^4+0.5*(x^3+y^3+z^3)-0.19875*(x+y+z)
x*y^2*z^4+a*y^4*z^2+b*y^2*z^3-c*x^2*y^3-d*y*z^4-x^4*y*z...
x^4+y^4+z^4-a^4
(x^2+y^2+z^2+7*sqrt(5)/2-11/2)^2-((1+sqrt(5))*x-7+3*sqr...
y^4*z^2-a*y^2*z-b*x^3*y*z^2-c*y^2*z^3-d*z^2-z+y^3*z^2+x...
(((((a+0.1)*x^2+(a+0.1)*y^2-z)*(z-20)-2)*(z-2)*(z-8)*(z...