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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

The number of non-negative integral ordered pair(s) (x, y) for which (xy - 7)^2 = x^2 + y^2 holds is greater than or equal to :

Options

  1. A1
  2. B2
  3. C3
  4. D4.

Correct answer

A. 1

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