Multiple Choice Questions on 3x2 ndash 4x ndash 4 0 2y2 ndash 9y 10 0 ........ for RRB(NTPC) Exam Preparation

Quadratic Equations

Quantitative Aptitude (RRB NTPC)

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Study Notes

    3x2 – 4x – 4 = 0

    2y2 – 9y + 10 = 0 

    If X > Y

    Incorrect Answer

    If X < Y

    Incorrect Answer

    If X ≥ Y

    Incorrect Answer

    If X ≤ Y

    Correct Answer
    Explanation:

    Answer & Explanation
    If X ≤ Y
    Explanation: 
    3x2 – 4x – 4 = 0
    3x2 + 2x – 6x – 4 = 0
    Gives x = -2/3 , 2
    2y2 – 9y + 10 = 0
    2y2 – 4y – 5y + 10 = 0
    Gives y = 2, 5/2


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