Art of Problem Solving

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A user with 141 edits. Account created on 17 June 2006.
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  • 17:5817:58, 29 September 2007 diff hist +1,275 N 1988 IMO Problems/Problem 6 New page: Let <math>a</math> and <math>b</math> be positive integers such that <math>ab + 1</math> divides <math>a^{2} + b^{2}</math>. Show that <math> \frac {a^{2} + b^{2}}{ab + 1} </math> is the s...

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