Q017 :

-b^2*c^4*x^3*y^2 + a^2*c^4*x^2*y^3 + 2*b^4*c^2*x^3*y*z - 2*b^2*c^4*x^3*y*z - 2*a^4*c^2*x*y^3*z + 2*a^2*c^4*x*y^3*z + b^4*c^2*x^3*z^2 - a^4*c^2*y^3*z^2 - a^2*b^4*x^2*z^3 + 2*a^4*b^2*x*y*z^3 - 2*a^2*b^4*x*y*z^3 + a^4*b^2*y^2*z^3 = 0