x+1/x=-1(x+1/x)^2=(-1)^2X^2+2+1/x^2=1X^2+1/x^2=-1(X^2+1/x^2)^2=(-1)^2X^4+1/x^4=-1......X^1024+1/x^1024=-1
其实我想问，这个x²+1/x²可能等于-1吗？？？
