过程如下1,x²-2x+1-3=02,(x-1)²-3=03,(x-1)²=34,x-1=±√35,x=±√3+1
X²-2x-2=0 X²-2x+1-3=0 (x-1)^2=3x-1=正负根号3x=1+正负根号3
(x-1)²-4=0(x-1)²=4x-1=2或x-1=-2x=3或x=-1