
试求(2-1)(2+1)(2的平方+1)(2的4次方+1)(2的8次方+1)(2的16次方+1)(2的32次方+1)+1的个位数
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解:(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1
=(2²-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^4+1)(2^4-1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^8-1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^16-1)(2^16+1)(2^32+1)+1
=(2^32-1)(2^32+1)+1
=(2^64-1)+1
=2^64
所以,计算结果的个位数是6.
资料来自:http://zhidao.baidu.com/question/533034583.html
=(2²-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^4+1)(2^4-1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^8-1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^16-1)(2^16+1)(2^32+1)+1
=(2^32-1)(2^32+1)+1
=(2^64-1)+1
=2^64
所以,计算结果的个位数是6.
资料来自:http://zhidao.baidu.com/question/533034583.html
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