(3+1)(3平方+1)(3四次方+1)(3的八次方+1)

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(3+1)(3平方+1)(3四次方+1)(3的八次方+1)
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(3+1)(3平方+1)(3四次方+1)(3的八次方+1)
(3+1)(3平方+1)(3四次方+1)(3的八次方+1)

(3+1)(3平方+1)(3四次方+1)(3的八次方+1)
(3+1)(3²+1)(3^4+1)(3^8+1)
=2×(3+1)(3²+1)(3^4+1)(3^8+1)÷2
=(3-1)(3+1)(3²+1)(3^4+1)(3^8+1)÷2
=(3²-1)(3²+1)(3^4+1)(3^8+1)÷2
=(3^4-1)(3^4+1)(3^8+1)÷2
=(3^8-1)(3^8+1)÷2
=(3^16-1)÷2
=½(3^16-1)