x_1, x_2, 
5*x_1^5-3*x_1^2*x_2^3+x_1^4+3*x_2^4+4*x_1*x_2^2-768
2*x_1^2*x_2^3-x_1^4+4*x_1^2*x_2^2+5*x_1*x_2^3+2*x_2^4+3*x_1^2*x_2-512
