Multiple Choice Questions on I x 2 ndash 3x ndash 54 0 II y 2 ndash 19y 90 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

I x 2 ndash 3x ndash 54 0 II y 2 ndash 19y 90 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    I.x^2 – 3x – 54 = 0

    II.y^2 – 19y + 90 = 0

    No relation

    Incorrect Answer

    x>=y

    Incorrect Answer

    y > x

    Incorrect Answer

    y >= x

    Correct Answer
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    Explanation:

    I.x^2 – 3x – 54 = 0
    =>x^2 – 9x + 6x – 54 = 0
    =>(x-9)(x+6) = 0
    =>x = 9, -6
    From II:
    II.y^2 – 19y + 90 = 0
    =>y^2 – 9y – 10y + 90 = 0
    =>(y-9)(y-10) = 0
    =>y = 9,10
    y>=x

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