Multiple Choice Questions on I x2 ndash x ndash 12 0 II y2 5y 6 0 ........ for IBPS RRB - Officers Exam Preparation

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Multiple Choice Questions

I x2 ndash x ndash 12 0 II y2 5y 6 0 ........

Quantitative Aptitude(IBPS RRB PO) Quadratic Equations
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    In the following question two equations are given in variables X and Y. You have to solve these equations and determine the relation between X and Y.

    I. x2 – x – 12 = 0

    II. y2 + 5y + 6 =0

    y > x

    Incorrect Answer

    y < x

    Incorrect Answer

    y ≥ x

    Incorrect Answer

    y ≤ x

    Incorrect Answer

    x = y or no relation can be established

    Correct Answer
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    Explanation:

    x2 – 4x + 3x – 12 = 0
    x (x –4) + 3(x –4) = 0
    (x +3) (x –4) = 0
    X = – 3, 4
    y2 + 5y + 6 = 0
    y2 + 2y + 3y + 6 = 0
    y (y + 2) + 3 (y + 2) = 0
    (y+2)(y+3) = 0
    y = – 2, – 3

    By: Munesh Kumari
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