化简[1-2/(x+1)]÷1/(x²-1)
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化简[1-2/(x+1)]÷1/(x²-1)化简[1-2/(x+1)]÷1/(x²-1)化简[1-2/(x+1)]÷1/(x²-1)[1-2/(x+1)]÷1/(x
化简[1-2/(x+1)]÷1/(x²-1)
化简[1-2/(x+1)]÷1/(x²-1)
化简[1-2/(x+1)]÷1/(x²-1)
[1-2/(x+1)]÷1/(x²-1)
=[(x-1)/(x+1)]*(x²-1)
=(x-1)²