(2+1)(2的四次方+1)(2的八次方+1)……(2的三十二次方+1) 10
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(2+1)(2的四次方+1)(2的八次方+1)……(2的三十二次方+1)
=1*(2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)
=(2-1)*(2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)
=(2^2-1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)
=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)/(2^2+1)
=(2^4-1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)/5
=(2^8-1)(2^8+1)(2^16+1)(2^32+1)/5
=(2^16-1)(2^16+1)(2^32+1)/5
=(2^32-1)(2^32+1)/5
=(2^64-1)/5
【运用平方差公式】
如果不懂,请追问,祝学习愉快!
=1*(2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)
=(2-1)*(2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)
=(2^2-1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)
=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)/(2^2+1)
=(2^4-1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)/5
=(2^8-1)(2^8+1)(2^16+1)(2^32+1)/5
=(2^16-1)(2^16+1)(2^32+1)/5
=(2^32-1)(2^32+1)/5
=(2^64-1)/5
【运用平方差公式】
如果不懂,请追问,祝学习愉快!
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