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    Subject

    Bank Exam

    Topic

    Southeast Bank Ltd. - Probationary Officer - 2017

    If w ≠ \ne 0 and w = 2x = 2y\sqrt {2y} , what is the value of w - x in terms of y ?

    ক)
    2y
    খ)
    \(\frac{{\sqrt {2y} }}{2}\)
    গ)
    \(\sqrt {2y} \)
    ঘ)
    2\(\sqrt {2y} \)

    Explanation

    Solution: দেয়া আছে, w = 2x = 2y\sqrt {2y} অর্থাৎ w = 2y\sqrt {2y} এবং 2x = 2y\sqrt {2y}      x = 2y2\frac{{\sqrt {2y} }}{2} প্রদত্ত রাশিমালা = w - x = 2y −2y2\sqrt {2y}  - \frac{{\sqrt {2y} }}{2} = 22y −2y2\frac{{2\sqrt {2y}  - \sqrt {2y} }}{2} = 2y(2−1)2=2y2\frac{{\sqrt {2y} (2 - 1)}}{2} = \frac{{\sqrt {2y} }}{2}

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