2. Solved Papers
  3. Railways

Railways R.R.C. (Patna) Solved Paper Held on 1st Shift 2-11-2014

  • question_answer
    If the roots of equation \[a{{x}^{2}}+bx+c=0\]we equal, then the value of c is?

    A) \[\frac{b}{2a}\]                         

    B) \[-\frac{b}{2a}\]

    C) \[\frac{{{b}^{2}}}{4a}\]                                 

    D) \[-\frac{{{b}^{2}}}{4a}\]

    Correct Answer: C

    Solution :

    If roots me equal, then \[{{b}^{2}}=4ac\] \[c=\frac{{{b}^{2}}}{4a}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner