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Problema 1 ONM 2007
https://mateforum.ro/viewtopic.php?t=1834
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Problema 1 ONM 2007
Posted:
Mon May 19, 2008 4:34 pm
by
Laurian Filip
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
\( 2 \)
.
Posted:
Mon May 19, 2008 4:42 pm
by
Bogdan Cebere
Ieri s-a discutat
http://www.mateforum.ro/viewtopic.php?t=1816