Y add -0.642 add mul -48.6 mul pow2 add -0.85 mul 0.31 x_4 inv add 3.0 mul 81.9 x_2 sub add mul -6.9 sqrt add 13.8 mul 0.6890000000000001 div x_2 add mul -0.35000000000000003 x_4 mul 10.0 x_1 mul -24.1 x_3 mul -0.314 x_0