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Re: [obm-l] congruencias
Title: Re: [obm-l] congruencias
on 09.03.04 01:14, Faelccmm@aol.com at Faelccmm@aol.com wrote:
Ola pessoal,
Prove que 2^70 + 3^70 eh divisivel por 13.
Ou entao, voce observa que 2^2 + 3^2 = 4 + 9 = 13.
Logo, mod 13, teremos:
2^2 + 3^2 == 0 ==>
2^2 == - 3^2 ==>
(2^2)^35 == (-3^2)^35 ==>
2^70 == -3^70 ==>
2^70 + 3^70 == 0
[]'s,
Claudio.