Subject

    Bank Exam

    Topic

    Joint Recruitment Test for 9 Banks - (Officers/General) - 07.01.2022

    If x+y=7 and x-y =3,then x ²-y ²=

    ক)
    -4
    খ)
    4
    গ)
    10
    ঘ)
    21

    Explanation

    দেওয়া আছে , x+y=7 এবং x-y=3 অতএব, x ²-y ²=(x+y)( x-y) =7×3 =21

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