Multiple Choice Questions on i 2x sup2 7x 5 0 ii 3y sup2 12y 9 0 ........ for IBPS(Clerical) Exam Preparation

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Multiple Choice Questions

i 2x sup2 7x 5 0 ii 3y sup2 12y 9 0 ........

Quantitative Aptitude(IBPS CL) 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) 2x ² + 7x + 5 = 0

    (ii) 3y ² + 12y + 9 = 0

    x>y

    Incorrect Answer

     x≥y

    Incorrect Answer

    x<y 

    Incorrect Answer

    x ≤y

    Incorrect Answer

    x = y or no relation can be
    established between x and y.

    Correct Answer
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    Explanation:

    (i) 2x ² + 7x + 5 = 0 2x ² + 2x + 5x + 5 = 0
    2x (x + 1) + 5 (x + 1) = 0
    (2x + 5) (x + 1) = 0
    x =-5/2,-1
    (ii) 3y ² + 12y + 9 = 0 3y ² + 9y + 3y + 9 = 0
    3y (y + 3) +3 (y + 3) = 0 (3y + 3) (y + 3) = 0
    y = –1, – 3
    No relation can be established.

    By: Munesh Kumari
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