Torna indietro Esercizi (x^2-1) (x^2+1)-(3x^2+2)(3x^2-2)+(3x^2-1)(3x^2+1)=(x^2-2)(x^2+2)+6 x^4-1-9x^4+4+9x^4-1=x^4-4+6 x^4+2=x^4+2 x3-82-9x-2 si annulla per x=1 dunque 1 -8 9 -2 1 2 -7 2 1 -7 2 0 x3-82-9x-2=(x-1)(x2-7x+2)
1 -8 9 -2 1 2 -7 2 1 -7 2 0