Algebra
Radacini cubice ale unitatii
Dacă z1 , z2 sunt rădăcini ale ecuației z2 + z + 1= 0, calculați z1#n + z2#n .]]>
1.0000000
0.3333333
0
0
#s
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Observati ca daca z este radacina a ecuatiei date , atunci z3 = 1 .]]>