化简:(1)x+1分之x+2-x+1分之x-1 (2)x-1分之1-x²-1分之x

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化简:(1)x+1分之x+2-x+1分之x-1(2)x-1分之1-x²-1分之x化简:(1)x+1分之x+2-x+1分之x-1(2)x-1分之1-x²-1分之x化简:(1)x+1分

化简:(1)x+1分之x+2-x+1分之x-1 (2)x-1分之1-x²-1分之x
化简:(1)x+1分之x+2-x+1分之x-1 (2)x-1分之1-x²-1分之x

化简:(1)x+1分之x+2-x+1分之x-1 (2)x-1分之1-x²-1分之x
1、=[(x+2)-(x-1)]/(x+1)
=(x+2-x+1)/(x+1)
=3/(x+1)
2、=(x+1)/(x+1)(x-1)-x/(x+1)(x-1)
=(x+1-x)/(x+1)(x-1)
=1/(x²-1)