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B^{2}i^{2}
Expandiu \left(Bi\right)^{2}.
B^{2}\left(-1\right)
Calculeu i elevat a 2 per obtenir -1.
B^{2}i^{2}
Expandiu \left(Bi\right)^{2}.
B^{2}\left(-1\right)
Calculeu i elevat a 2 per obtenir -1.