2 2 x1*x2 + x1 *x3 + x2*x3
x1*x2 + x1^2*x3^2 + x2*x3
2 2 x1*x2 + x2*x3 + x1 *x3
x1*x2 + x2*x3 + x1^2*x3^2
2 2 x2*(x1 + x3) + x1 *x3
2 2 x1*x2 + x2*x3 + x1 *x3
x1*x2 + x2*x3 + x1^2*x3^2
2 2 x1*x2 + x2*x3 + x1 *x3
x1*x2 + x2*x3 + x1^2*x3^2
/ 2\ x1*\x2 + x1*x3 / + x2*x3
x1*(x2 + x1*x3^2) + x2*x3
2 2 x1*x2 + x2*x3 + x1 *x3
x1*x2 + x2*x3 + x1^2*x3^2
2 2 x1*x2 + x2*x3 + x1 *x3
x1*x2 + x2*x3 + x1^2*x3^2
2 2 x1*x2 + x2*x3 + x1 *x3
x1*x2 + x2*x3 + x1^2*x3^2
2 2 x1*x2 + x2*x3 + x1 *x3
x1*x2 + x2*x3 + x1^2*x3^2