1.

If \[\alpha \]and \[\beta \] are roots of the equation \[A{{x}^{2}}+Bx+C=0\], then value of \[{{\alpha }^{3}}+{{\beta }^{3}}\] is  [RPET 1996; DCE 2005]

A. \[\frac{3ABC-{{B}^{3}}}{{{A}^{3}}}\]
B. \[\frac{3ABC+{{B}^{3}}}{{{A}^{3}}}\] 
C. \[\frac{{{B}^{3}}-3ABC}{{{A}^{3}}}\]
D. \[\frac{{{B}^{3}}-3ABC}{{{B}^{3}}}\]
Answer» B. \[\frac{3ABC+{{B}^{3}}}{{{A}^{3}}}\] 


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