作业帮a分之a+1×(a+1分之2a)²-[(a-1分之1)-(a+1分之1)]
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/06 17:09:26
![a分之a+1×(a+1分之2a)²-[(a-1分之1)-(a+1分之1)]](/uploads/image/z/3012553-1-3.jpg?t=a%E5%88%86%E4%B9%8Ba%2B1%C3%97%28a%2B1%E5%88%86%E4%B9%8B2a%29%26%23178%3B-%5B%28a-1%E5%88%86%E4%B9%8B1%29-%28a%2B1%E5%88%86%E4%B9%8B1%29%5D)
a分之a+1×(a+1分之2a)²-[(a-1分之1)-(a+1分之1)]
a分之a+1×(a+1分之2a)²-[(a-1分之1)-(a+1分之1)]
a分之a+1×(a+1分之2a)²-[(a-1分之1)-(a+1分之1)]
原式=(a+1)/a×4a²/(a+1)²-[(a+1)-(a-1)]/(a+1)(a-1)
=4a/(a+1)-2/(a+1)(a-1)
=[4a(a-1)-2[/(a+1)(a-1)
=(4a²-4a-2)/(a²-1)