Equation

-4*c^3*d^2*e^2 - 27*d^4*e^2 + 16*c^4*e^3 + 144*c*d^2*e^3 - 128*c^2*e^4 + 256*e^5 + 16*c^3*d^3*f + 108*d^5*f - 72*c^4*d*e*f - 630*c*d^3*e*f + 560*c^2*d*e^2*f - 1600*d*e^3*f + 108*c^5*f^2 + 825*c^2*d^2*f^2 - 900*c^3*e*f^2 + 2250*d^2*e*f^2 + 2000*c*e^2*f^2 - 3750*c*d*f^3 + 3128*f^4

Tito Piezas