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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If x^2 + px + 1 is a factor of ax^3 + bx + c , then:

Options

  1. Aa^2 + c^2 = -ab
  2. Ba^2 + c^2 = ab
  3. Ca^2 - c^2 = ab
  4. Da^2 - c^2 = -ab .

Correct answer

C. a^2 - c^2 = ab

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