Code : Tout sélectionner
p:=8/3*a^2*b^3+1/3*a^2*b^2*d+4/3*a^2*b^2-8*a^2*b*c^2-8/3*a^2*b*c*d+16/21*a^2*b*d-a^2*c^2*d-4*a^2*c^2-1/3*a^2*c*d^2-4/3*a^2*c*d+2/21*a^2*d^2+8/21*a^2*d+120*a*b^4*d+8*a*b^4+15*a*b^3*d^2-67*a*b^3*d+180/37*a*b^3-360*a*b^2*c^2*d-18*a*b^2*c^2-120*a*b^2*c*d^2-8*a*b^2*c*d+128/7*a*b^2*d^2-15956/259*a*b^2*d+16/37*a*b^2-45*a*b*c^2*d^2+201*a*b*c^2*d-540/37*a*b*c^2-15*a*b*c*d^3+67*a*b*c*d^2-180/37*a*b*c*d+30/7*a*b*d^3-134/7*a*b*d^2+360/259*a*b*d-18*a*c^4-6*a*c^3*d+48*a*c^2*d^2+50088/259*a*c^2*d-48/37*a*c^2+16*a*c*d^3+2364/37*a*c*d^2-16/37*a*c*d-32/7*a*d^3-4728/259*a*d^2+32/259*a*d+270*b^3*c^2*d+18*b^3*c^2-288*b^2*c^2*d+72/37*b^2*c^2-810*b*c^4*d-54*b*c^4-270*b*c^3*d^2-18*b*c^3*d+540/7*b*c^2*d^2+36/7*b*c^2*d+864*c^4*d-216/37*c^4+288*c^3*d^2-72/37*c^3*d-576/7*c^2*d^2+144/259*c^2*d:;
factor(p)
donne:
"Division euclidienne non exacte, peut-être des erreurs d'arrondis...
(avec 0.9.9 .... 1.1.2)