Multiple Choice Questions on I x ndash 12 sup2 0 II y sup2 ndash 21y 108 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

I x ndash 12 sup2 0 II y sup2 ndash 21y 108 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    I. (x – 12)² = 0

    II.y² – 21y + 108 = 0

    x>y

    Incorrect Answer

    y>=x

    Incorrect Answer

    x>=y

    Correct Answer

    y>x

    Incorrect Answer
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    Explanation:

    I.(x – 12)² = 0
    x – 12 = 0
    x = 12
    II. y² – 21y + 108 = 0
    y² – 12y – 9y + 108 = 0
    y (y – 12) – 9 (y – 12) = 0
    (y – 9) (y – 12) = 0
    y = 9, 12
    x ≥ y

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