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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If the equation x^2 + px + q = 0 , the coefficient of x was incorrectly written as 17 instead of 13. Then roots were found to be -2 and -15 . The correct roots are :

Options

  1. A-1
  2. B-3
  3. C-5
  4. D-10 .

Correct answer

B. -3

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