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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If , are the roots of the quadratic equation x^2 + px + q = 0 and , are the roots of x^2 + px - r = 0 then ( - )( - ) is equal to :

Options

  1. Aq+r
  2. Bq-r
  3. C-(q+r)
  4. D-(p+q+r) .

Correct answer

C. -(q+r)

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