Y add -72.2 mul div mul inv sub mul -19.900000000000002 x_0 add mul 6.3500000000000005 x_3 mul 0.512 pow2 add -0.23 mul -84.5 x_4 sub mul -1.07 exp add 40.800000000000004 mul -6.98 x_1 mul 3.0 x_2 x_1 inv add -87.7 mul 0.157 x_4