Y add -55.400000000000006 div div x_2 add mul 1.51 div div x_1 x_2 x_5 add mul 1.0 exp sub mul 65.0 x_3 mul -0.291 x_4 sub mul -68.4 inv add mul -51.900000000000006 x_3 mul -0.79 x_5 mul 0.083 x_4 x_0