Subject

    Bank Exam

    Topic

    Joint Recruitment Test for 8 Banks - (Officers/General) - 21.01.2022

    If (x+y)=8 and (x-y) =6 ,whatt is the value of xy?

    ক)
    7
    খ)
    6
    গ)
    1
    ঘ)
    3

    Explanation

    দেওয়া আছে ,x+y=8 এবং ,x-y=6 ∴ xy={(x+y)/2}²  -{(x-y)/2}² =(8/2)²-(6-2)² =4²-3² =16-9 =7

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