Y add -7.72 sub mul -4.01 mul x_1 pow3 add -3.04 mul 0.8320000000000001 x_2 add mul -7.3500000000000005 mul sub mul 7.96 x_1 mul -3.63 x_3 x_3 sub mul -0.8200000000000001 x_2 mul -4.09 div exp add 0.28600000000000003 mul 83.80000000000001 x_0 x_1