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5^8-1 能被20-30之间的哪2个数整除
人气:165 ℃ 时间:2020-04-28 04:22:04
解答
5^8-1
=(5^4+1)(5^4-1)
=(5^4+1)(5^2+1)(5^2-1)
=(5^4+1)×26×24
所以能被26和24整除
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