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数学
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5^2008+5^2007+5^2006能被31整除吗
人气:243 ℃ 时间:2020-06-22 09:58:48
解答
能.解法如下:
5^2008+5^2007+5^2006
=5^2006×(5^2+5^1+5^0) (提取公因式)
=5^2006×(25+5+1)
=5^2006×31
所以,5^2008+5^2007+5^2006能被31整除.
注意哦,任何数(除了0)的0次方都是1
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