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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-2

  • question_answer
    If one of the roots of the quadratic equation \[2{{x}^{2}}+kx+4=0\] is to find the other roots.

    A)  4                                

    B)  2

    C)  1                    

    D)       3

    Correct Answer: C

    Solution :

     Product of two roots \[=\frac{c}{a}\]                  \[=\frac{4}{2}=2\] one roots = 2 (given) the other roots \[=\frac{Product}{given\,\,\,roots}\] \[=\frac{2}{2}=1\]


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