question_answer

If the zeroes of the polynomial \[{{x}^{3}}-15{{x}^{2}}+66x-80\] are \[\alpha ,\] \[\beta \] & \[\gamma \] and it is also given that \[2\beta =\alpha +\gamma \] then

A)  \[\alpha =4\]                

B) \[\gamma =3\]       

C) \[\gamma =7\]       

D) \[\alpha =2\]

E)  None of these