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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If , , and are the roots of the equation x^4 - bx - 3 = 0 ; then an equation whose roots are + + ^2 , + + ^2 , + + ^2 and + + ^2 is :

Options

  1. A3x^4 + bx + 1 = 0
  2. B3x^4 - bx + 1 = 0
  3. C3x^4 + bx^3 - 1 = 0
  4. D3x^4 - bx^3 - 1 = 0 .

Correct answer

D. 3x^4 - bx^3 - 1 = 0 .

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