Subject

    Bank Exam

    Topic

    NCC Bank Ltd. 2011 (MTO)

    (4+√5)(4-√5) is equal to:

    ক)
    -1
    খ)
    0
    গ)
    11
    ঘ)
    21

    Explanation

    (4+√5)(4-√5) =(4)2-(√5)2 =16-5 =11

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