olymmath

IMO 2006 Problem 4

  • Day 2

Determine all pairs (x,y)(x, y) of integers such that 1+2x+22x+1=y2.1+2^{x}+2^{2x+1}= y^{2}.

Dataset text AI-MO AoPS. Quoted with source.

Official text: IMO 2006 official English paper, page 2.

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