Problema 1 ONM 2007
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Laurian Filip
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Problema 1 ONM 2007
Demonstrati ca ecuatia \( z^n+z+1=0 \) are o solutie complexa de modul \( 1 \) daca si numai daca restul impartirii lui \( n \) la \( 3 \) este \( 2 \).
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Bogdan Cebere
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Ieri s-a discutat http://www.mateforum.ro/viewtopic.php?t=1816