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BG-MO 2022 Problem 3

    Let x>y>2022x>y>2022 be positive integers such that xy+x+yxy+x+y is a perfect square. Is it possible for every positive integer zz from the interval [x+3y+1,3x+y+1][x+3y+1,3x+y+1] the numbers x+y+zx+y+z and x2+xy+y2x^2+xy+y^2 not to be coprime?

    Dataset text AI-MO AoPS. Quoted with source.

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