Q175 :

a^4 b^2 c^4 x^3 y^2-b^6 c^4 x^3 y^2-a^2 b^2 c^6 x^3 y^2+b^4 c^6 x^3 y^2+a^6 c^4 x^2 y^3-a^2 b^4 c^4 x^2 y^3-a^4 c^6 x^2 y^3+a^2 b^2 c^6 x^2 y^3-2 b^6 c^4 x^3 y z+2 b^4 c^6 x^3 y z+2 a^6 c^4 x y^3 z-2 a^4 c^6 x y^3 z-a^4 b^4 c^2 x^3 z^2+a^2 b^6 c^2 x^3 z^2-b^6 c^4 x^3 z^2+b^4 c^6 x^3 z^2-a^6 b^2 c^2 y^3 z^2+a^4 b^4 c^2 y^3 z^2+a^6 c^4 y^3 z^2-a^4 c^6 y^3 z^2-a^6 b^4 x^2 z^3+a^4 b^6 x^2 z^3-a^2 b^6 c^2 x^2 z^3+a^2 b^4 c^4 x^2 z^3-2 a^6 b^4 x y z^3+2 a^4 b^6 x y z^3-a^6 b^4 y^2 z^3+a^4 b^6 y^2 z^3+a^6 b^2 c^2 y^2 z^3-a^4 b^2 c^4 y^2 z^3=0