化简 （1+1/x-2）除以x²-2x+1/x²-4

化简 （1+1/x-2）除以x²-2x+1/x²-4
化简 （1+1/x-2）除以x²-2x+1/x²-4

化简 （1+1/x-2）除以x²-2x+1/x²-4
原式=(x-2+1)/(x-2)÷(x-1)²/(x+2)(x-2)
=(x-1)/(x-2)*(x+2)(x-2)/(x-1)²
=(x+2)/(x-1)