2n2n2n2n2的知识精选

若2n+2n+2n+2n=2,则n=(  )A.﹣1                       B.﹣2  ...
问题详情:若2n+2n+2n+2n=2,则n=()A.﹣1                       B.﹣2                        C.0                          D.【回答】A【解析】利...
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