r= x^24 - x^12 + 1 q= (2* (x^8+1)^2 + (1-x^8)^2*(x^15 + x^9 - x^3)^2) / 8 P= x^23 + 2*x^20 - 2*x^19 - x^17 - 4*x^16 + x^15 - 2*x^14 + 2*x^13 + 2*x^12 + x^11 + 4*x^10 - x^9 + 2*x^8 - 2*x^7 - 2*x^6 + 4*x^4 + x^3 + 2 v= x^2