Multiple Choice Questions on I 4x2 13x 9 0 II 3y2 ndash 7y ndash 20 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

I 4x2 13x 9 0 II 3y2 ndash 7y ndash 20 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    I. 4x2 + 13x + 9 = 0

    II. 3y2 – 7y – 20 = 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:

    4x2 + 13x + 9 = 0
    4x2 + 4x + 9x + 9 = 0
    Gives x = -9/4, -1
    3y2 – 7y – 20 = 0
    3y2 – 12y + 5y – 20 = 0
    Gives y = -5/3, 4
    Put all values on number line and analyze the relationship
    -9/4…. -5/3…. -1….4

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