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[" D-8.If "alpha=e^(" eent then Real ")(...

[" D-8.If "alpha=e^(" eent then Real ")(alpha+alpha^(2)+alpha^(3)+alpha^(4)+alpha^(5))" equals to : "],[[" (A) "," (B) "1," (C) "-(1)/(2)," (D) "-1]]

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