Multiple Choice Questions on I 5x2 ndash 8x ndash 4 0 II 5y2 ndash 23y ndash 10 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

I 5x2 ndash 8x ndash 4 0 II 5y2 ndash 23y ndash 10 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    I. 5x2 – 8x – 4 = 0,

    II. 5y2 – 23y – 10 = 0

    x < y

    Incorrect Answer

    x ≥ y

    Incorrect Answer

    x ≤ y

    Incorrect Answer

    x = y or relation cannot be established

    Correct Answer
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    Explanation:

    5x2 – 8x – 4 = 0
    5x2 – 10x + 2x – 4 = 0
    So x = -2/5, 2
    5y2 – 23y – 10 = 0
    5y2 – 25y + 2y – 10 = 0
    So y = -2/5, 5
    Put all values on number line and analyze the relationship
    -2/5 …. 2….. 5

    By: Amit Kumar
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