x4−4x3+5x2−2x−2=0x^{4}-4 x^{3}+5 x^{2}-2 x-2=0x4−4x3+5x2−2x−2=0
x4−4x3+5x2−2x+2=0x^{4}-4 x^{3}+5 x^{2}-2 x+2=0x4−4x3+5x2−2x+2=0
x4−4x3+5x2+2x+2=0x^{4}-4 x^{3}+5 x^{2}+2 x+2=0x4−4x3+5x2+2x+2=0
−x4+4x3+5x2−2x−2=0-x^{4}+4 x^{3}+5 x^{2}-2 x-2=0−x4+4x3+5x2−2x−2=0