x^4 - x^3 + 109*x^2 - 163*x + 2158 x^4 + 105*x^2 + 169 x^4 - 2*x^3 - 109*x^2 - 21*x + 2108 x^4 - 2*x^3 + 199*x^2 - 198*x - 548