Y add 5.4 add add mul 4.28 div x_2 add mul 6.800000000000001 x_3 mul -4.51 x_4 add mul -0.467 x_1 mul -0.863 inv add -0.13 mul 3.0100000000000002 x_0 mul -79.10000000000001 div pow3 add -0.019 mul 9.82 div x_3 mul sqrt add 8.96 mul 0.97 x_2 x_4 x_3