2(3+1)(3²+1)(3四次方+1)
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![2(3+1)(3²+1)(3四次方+1)](/uploads/image/z/1016355-3-5.jpg?t=2%283%2B1%29%283%26%23178%3B%2B1%29%283%E5%9B%9B%E6%AC%A1%E6%96%B9%2B1%EF%BC%89)
2(3+1)(3²+1)(3四次方+1)
2(3+1)(3²+1)(3四次方+1)
2(3+1)(3²+1)(3四次方+1)
2(3+1)(3²+1)(3四次方+1)
=(3-1)(3+1)(3²+1)(3四次方+1)
=(3²-1)(3²+1)(3四次方+1)
=(3的4次方-1)(3四次方+1)
=3的8次方-1
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2(3+1)(3²+1)(3四次方+1)
=2x4x(9+1)x(81+1)
=8x10x82
=828
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