Y add 29.400000000000002 div div x_2 div div sub mul 0.656 x_3 mul -55.900000000000006 x_1 x_4 sub mul 9.08 x_1 mul -2.14 abs add -2.22 mul -21.700000000000003 x_0 add mul -3.39 x_0 mul 4.0200000000000005 mul x_2 x_3