Multiple Choice Questions on 4x2 ndash 20x 21 0 9y2 ndash 27y 20 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

4x2 ndash 20x 21 0 9y2 ndash 27y 20 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    4x2 – 20x + 21 =0

    9y2 – 27y + 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:

    Answer & Explanation
    X = Y or relation cannot be established
    Explanation: 
    4x2 – 20x + 21 =0
    4x2 – 6x – 14x + 21 =0
    x = 1.5 3.5
    9y2 – 27y + 20 =0
    9y2 -15y – 12y + 20 =0
    y = 1.33 ,1.66

    By: MIRZA SADDAM HUSSAIN
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