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Black Book Advanced Problems in MathematicsMathematicsDeterminants

If one of the roots of the equation vmatrix 7 & 6 & x^2 - 13 2 & x^2 - 13 & 2 x^2 - 13 & 3 & 7 vmatrix = 0 is x = 2, then sum of all other five roots is:

Options

  1. A-2
  2. B0
  3. C2 5
  4. D15

Correct answer

A. -2

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