New SIDBI Grade A New Batch Starts on Nov 18

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    Question

    In the question, two quantities I and II are given. You have to solve both the quantities to establish the correct relation between Quantity-I and Quantity-II and choose the correct option.

    I. 2x2 + 7x + k = 0

    II. (ay + b)2 = 0

    Find the value of “k”.

    When it is given that:

    1. Larger roots of equation I is equal to larger root of equation II.

    2. Smaller root of equation I is -2.

    A 6 Correct Answer Incorrect Answer
    B 5 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 9 Correct Answer Incorrect Answer
    E 3 Correct Answer Incorrect Answer

    Solution

    From condition 2, we will put the value of x = -2 in equation I, 2x2 + 7x + k = 0 => 2 × (-2)2 + 7 × - 2 + k = 0 => 8 – 17 + k = 0 => k = 6

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