am nevoie urgenttt dau coroană
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a) E(0) = 0/(0-3) = 0
b) E(-4) = (-4)²/ (-4-3) = 16/-7 = -16/7
c) E(6) = 6²/(6-3) = 36/3 = 12
d) E(3) = 3²/(3-3) = 9/0 nu se poate defini