(x+1)/x²-2x²/(x+1)=1令t=(x+1)/x²,那么x²/(x+1)=1/t所以原方程变为:t-2/t=1t²-t-2=0,(t+1)(t-2)=0,所以t=-1,或t=2当t=(x+1)/x²=-1时,x²+x+1=0,此时Δ=1-4<0,无解;当t=(x+1)/x²=2时,2x²-x-1=0,(2x+1)(x-1)=0,所以x=-1/2,或x=1综上,x=-1/2,或x=1