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Part of 2015 Bosnia and Herzegovina Junior BMO TST

Problems(1)

Bosnia and Herzegovina JBMO TST 2015 Problem 1

Source: Bosnia and Herzegovina Junior Balkan Mathematical Olympiad TST 2015

9/16/2018
Solve equation x(x+1)=y(y+4)x(x+1) = y(y+4) where xx, yy are positive integers
number theoryequationalgebraDiophantine equation