Daca x1 si x2 sunt radacinile ecuatiei x^2+x+1=0 Sa se calculeze :
a)x1^10+x2^10
b)(x1+1)^10+(x2+1)^10
c)x1^20+x2^20
d) 1/(x1^100)+1/(x2^100)
e)(x1+x1^2)^500+(x2+x2^2)^500