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    3. Quantitative Aptitude
    4. Quadratic equation
    5. One of the roots of equation bp2 — (9b+3)p + 64 = 0 is 8, Determine the others root.

    Question

    One of the roots of equation bp2 — (9b+3)p

    + 64 = 0 is 8, Determine the others root.
    A 2/5 Correct Answer Incorrect Answer
    B 5/7 Correct Answer Incorrect Answer
    C 2/7 Correct Answer Incorrect Answer
    D 8/5 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, So, [9b + 3]/b = 8 + z [ z is another root] And, 8z = 64/b Or, z = 8/b So, [9b + 3]/b = 8+8/b Or, 9b + 3 = 8b + 8 Or, b = 5 So, z = 8/5

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