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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

(A) The real root (s) of the equation x^4 - 8x^2 - 9 = 0 are (P) No real roots (B) The real root (s) of the equation x^ 2/3 + x^ 1/3 - 2 = 0 are (Q) -3, 3 (C) The real root (s) of the equation 3x + 1 + 1 = x are (R) -8, 1

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