Y add -63.2 mul mul sub mul 2.3000000000000003 x_0 mul -4.0 sqrt add 8.85 mul 0.869 x_0 inv add 67.0 mul -0.6940000000000001 x_2 add mul 0.656 x_3 sub mul 67.3 x_2 mul -0.453 inv add -0.503 mul 0.234 x_1