Y add -69.60000000000001 mul add sub mul 0.421 x_2 mul 9.18 mul x_3 x_7 mul 41.0 x_0 add sub mul -6.5 pow2 sub mul -15.700000000000001 x_4 mul -97.30000000000001 pow2 add -38.400000000000006 mul -9.94 x_6 mul -0.71 pow2 add -72.2 mul -30.6 x_1 mul 27.400000000000002 exp add -0.742 mul 0.919 x_5