Multiple Choice Questions on For what value of lsquo y rsquo x2 1 12x y2 is a perfect square ........ for Punjab Patwari Exam Preparation

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Multiple Choice Questions

For what value of lsquo y rsquo x2 1 12x y2 is a perfect square ........

Quantitative Aptitude (Pb Patwari) Algebra
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    For what value of ‘y’, x2+1/12x+y2 is a perfect square?

    1/6

    Incorrect Answer

    1/12

    Incorrect Answer

    1/24

    Correct Answer

    1/48

    Incorrect Answer
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    Explanation:

    x2+112x+y2=x2+2(124)x+y2
    By, (a + b)2 = a2 + 2ab + b2
    Here, a = x and b = y = 1/24
    So, for x2+1/12x+y2 to be perfect square y = 1/24

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