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NDA2011MathematicsQuadratic EquationActual

If the equations x^2-p x+q=0 and x^2-a x+b=0 have a common root and the roots of the second equation are equal, then which one of the following is correct?

Options

  1. Aa q=2(b+p)
  2. Ba q=b+p
  3. Ca p=2(b+q)
  4. Da p=b+q

Correct answer

C. a p=2(b+q)

Step-by-step solution

The correct answer is option C

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