Y add 2.9 mul pow3 add 20.3 mul -0.727 x_6 sub mul 0.899 mul sub add mul -65.60000000000001 x_3 mul -1.28 x_7 mul 0.8210000000000001 x_0 x_5 sub mul 8.56 inv add -18.8 mul -2.9000000000000004 mul x_2 x_1 mul -0.66 x_4