Subject

    Bank Exam

    Topic

    Pubali Bank Ltd. Junior Officer 2012

    If a=-1, then, (a4+a3+a2+a)=

    ক)
    -10
    খ)
    -4
    গ)
    0
    ঘ)
    4

    Explanation

    (a 4 +a 3 +a 2 +a) = [(-1) 4 +(-1) 3 +(-1) 2 +(-1)] = (1-1+1-1) = 0

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