(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)等于几(^是几的几次方)
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(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)等于几(^是几的几次方)
(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)等于几(^是几的几次方)
(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)等于几(^是几的几次方)
(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2-1)×(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2²-1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2^4-1)x(2^4+1)x(2^8+1)x...x(2^32+1)'
反复用平方差
=2^64-1
原式=(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=1x(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2-1)x (2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2...
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原式=(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=1x(2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2-1)x (2+1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2²-1)x(2²+1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2^4-1)x(2^4+1)x(2^8+1)x...x(2^32+1)
=(2^32-1)x(2^32+1)
=2^64-1
此题就是在前面乘以一个1,然后利用平方差公式,最终结果写2^64-1即可,具体值不用算出,还有不懂的可以问我。
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