原式等于x^2-2x+1-3=0(x-1)^2-3=0(x-1+根号3)(x-1-根号3)=0x=1+根号3 或 x=1-根号3
x^2-2x-2=0x^2-2x+1=3(x-1)^2=3x-1=±√3x=1±√3
X^2-2X-2=0X^2-2X+1-3=0 (x-1)^2=3 x-1=±√3x=1±√3