解：x²-x=x-1x（x-1）=（x-1）（x-1）（x-1）=0x=1如果不懂，可以追问！！！
x²-x=x-1x(x-1)-(x-1)=0(x-1)*(x-1)=0x1=x2=1
方法1x^2-x=x-1x^2-2x+1=0(x-1)^2=0x1=x2=1方法2x^2-x=x-1x(x-1)=(x-1)x=1 或 x-1=0即x1=x2=1
