Multiple Choice Questions on I x sup2 ndash 72 x II y sup2 64 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

I x sup2 ndash 72 x II y sup2 64 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    I. x² – 72 = x

    II. y² = 64

    y ≥ x

    Incorrect Answer

    x > y

    Incorrect Answer

    y > x

    Incorrect Answer

    No relation

    Correct Answer
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    Explanation:

    I. x² –x – 72 = 0
    x² – 9x + 8x – 72 = 0
    x (x – 9) +8 (x – 9) = 0
    x = 9 or -8
    II. y² = 64
    y = ± 8
    No relation

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