Multiple Choice Questions on i 4x sup2 ndash 24x 32 0 ii y sup2 ndash 8y 15 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

i 4x sup2 ndash 24x 32 0 ii y sup2 ndash 8y 15 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    (i) 4x² – 24x + 32 = 0

    (ii) y² – 8y + 15 = 0

    y > x

    Incorrect Answer

    y >= x

    Incorrect Answer

    x >= y

    Incorrect Answer

    No relation exists

    Correct Answer
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    Explanation:

    (i)4x² – 24x + 30 = 0
    4x² – 16x – 8x + 32 = 0
    4x (x – 4) –8 (x–4) = 0
    x = 4, 2
    (ii) y² – 8y + 15 = 0
    y² – 5y – 3y + 15 = 0
    y(y – 5)–3 (y – 5) = 0
    y = 5, 3
    No relation exists

    By: Amit Kumar
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