Multiple Choice Questions on I 2x2 ndash 6x ndash 48 0 II y2 ndash 13y 42 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

I 2x2 ndash 6x ndash 48 0 II y2 ndash 13y 42 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    I. 2x2–6x–48 = 0

    II. y2–13y+42 = 0

    x>y

    Incorrect Answer

    x<y

    Incorrect Answer

    x≤y

    Correct Answer

    x≥y

    Incorrect Answer
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    Explanation:

    2x2–4x–48 = 0
    2(x2–2x–24) = 0
    x2–2x–24 = 0
    x2–6x+4x–24 = 0
    x = +6, –4
    y2–13y+42 = 0
    y2–7y–6y+42 = 0
    y = +7, +6
    Hence, x≤y

    By: MIRZA SADDAM HUSSAIN
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