Multiple Choice Questions on Directions In each of these questions two equations I and II are given You have to solve both the eq........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Directions In each of these questions two equations I and II are given You have to solve both the eq...........

Quantitative Aptitude ( CCS) Quadratic Equations
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    Directions: In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer.

    I. 2x² + 11x + 14 = 0

    II. 2y² + 15y + 28 = 0

    y > x

    Incorrect Answer

    y ≥ x

    Incorrect Answer

    x > y

    Incorrect Answer

    x ≥ y

    Correct Answer
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    Explanation:

    I. 2x² + 11x + 14 = 0
    ⇒ 2x² + 4x + 7x + 14= 0
    ⇒ (x + 2) (2x + 7) = 0
    ⇒ x = -2, -7/2
    II. 2y² + 15y + 28= 0
    ⇒ 2y² + 8y + 7y + 28 = 0
    ⇒ (y + 4) (2y + 7) = 0
    ⇒ y = –4, –7/2
    x ≥ y

    By: Amit Kumar
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