x^4 - x^3 + 10*x^2 + 13*x + 37 x^4 + 39*x^2 + 196 x^4 - 2*x^3 - 4*x^2 - 171*x + 207 x^4 - 2*x^3 + 18*x^2 - 17*x - 112