−x3+bx2−cx+a=0-x^{3}+b x^{2}-c x+a=0−x3+bx2−cx+a=0
ax3+ccx2−bx+1=0\mathrm{ax}^{3}+c \mathrm{cx}^{2}-\mathrm{bx}+1=0ax3+ccx2−bx+1=0
x3+bx2+cx+a=0x^{3}+b x^{2}+c x+a=0x3+bx2+cx+a=0
ax3−cx2+bx−1=0a x^{3}-c x^{2}+b x-1=0ax3−cx2+bx−1=0