Multiple Choice Questions on x2 ndash 5x ndash 14 0 y2 ndash 16y 64 0 ........ for IBPS RRB - Officers Exam Preparation

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Multiple Choice Questions

x2 ndash 5x ndash 14 0 y2 ndash 16y 64 0 ........

Quantitative Aptitude(IBPS RRB PO) Quadratic Equations
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    Directions (): Following question contains two equations as I and II. You have to solve both equations and determine the relationship between them and give answer as,

    x2 – 5x – 14 = 0

    y2 – 16y + 64 = 0

    x ≤ y

    Incorrect Answer

    x> y

    Incorrect Answer

    x ≥ y

    Incorrect Answer

    x = y or relationship can’t be determined.

    Incorrect Answer

    x< y

    Correct Answer
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    Explanation:

    x2 – 5x – 14 = 0
    x2 – 7x + 2x – 14 = 0
    x(x – 7) + 2(x – 7) = 0
    x =7, -2
    y2 – 16y + 64 = 0
    y2 – 8y – 8y + 64 = 0
    y(y – 8) – 8(y – 8) = 0
    y=8, 8
    x

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