Multiple Choice Questions on If the harmonic mean between roots of is 4 then b is equal to ........ for 11th Standard Preparation

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Multiple Choice Questions

If the harmonic mean between roots of is 4 then b is equal to ........

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    If the harmonic mean between roots of  (5+\sqrt{2})x^{2}-bx+8+2\sqrt{5}=0 is 4, then b is equal to

    3

    Incorrect Answer

    4+\sqrt5

    Correct Answer

    2

    Incorrect Answer

    4-\sqrt5

    Incorrect Answer
    Explanation:

    4+\sqrt5

    By: Swaminath Yadav
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