化简2a-(a 1) +(a-1分之a²-1)

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化简2a-(a 1) +(a-1分之a²-1)
化简2a-(a 1) +(a-1分之a²-1)

化简2a-(a 1) +(a-1分之a²-1)
2a-(a+1) +(a-1分之a²-1)
=a-1+(a+1)(a-1)/(a-1)
=a-1+a+1
=2a
如追加其它问题,采纳本题后点击想我求助,

2a-(a- 1) +(a-1分之a²-1)
=2a-a+1+(a+1)(a-1)/(a-1)
=a+1+a+1
=2a+2

2a-(a+1) +(a-1分之a²-1)
=a-1+(a+1)(a-1)/(a-1)
=a-1+a+1
=2a