(1/a-2+1/a+2)÷2a/a²-4a+4
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 13:38:46
![(1/a-2+1/a+2)÷2a/a²-4a+4](/uploads/image/z/2479123-19-3.jpg?t=%281%2Fa-2%2B1%2Fa%2B2%29%C3%B72a%2Fa%26%23178%3B-4a%2B4)
(1/a-2+1/a+2)÷2a/a²-4a+4
(1/a-2+1/a+2)÷2a/a²-4a+4
(1/a-2+1/a+2)÷2a/a²-4a+4
原式=(a+2+a-2)/(a+2)(a-2)×(a-2)²/2a
=2a/(a+2)(a-2)×(a-2)²/2a
=(a-2)/(a+2)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 13:38:46
(1/a-2+1/a+2)÷2a/a²-4a+4
(1/a-2+1/a+2)÷2a/a²-4a+4
(1/a-2+1/a+2)÷2a/a²-4a+4
原式=(a+2+a-2)/(a+2)(a-2)×(a-2)²/2a
=2a/(a+2)(a-2)×(a-2)²/2a
=(a-2)/(a+2)