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关于x的不等式x 2-2ax-8a 2<0(a>0)的解集为(x 1,x 2),且x 2-x 1=15,则a=(  )

发布时间:2021-07-21

A.http://picflow.koolearn.com/upload/papers/20140824/20140824040557886367.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824040557901378.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824040557917391.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824040557933422.png

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