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We study the resolubility in the Hamilton’s quaternions of quadratic and cubic equations. For the quadratic case, essentially we present more properly known results. We completely developed the Cardano’s Formula for the cubic equation with real coefficients. We also present the solution of the general cubic equation, under a hypothesis on the coefficients.

FÓRMULAS RESOLUTIVAS DA EQUAÇÃO QUADRÁTICA E DA EQUAÇÃO CÚBICA SOBRE OS QUATÉRNIOS DE HAMILTON