x(x+1)(x+7)(x+8)=a^2 (integers)
Source: Argentina TST for Iberoamerican 2008 Problem 4
August 14, 2008
number theory proposednumber theory
Problem Statement
Find all integers such that x(x\plus{}1)(x\plus{}7)(x\plus{}8) is a perfect square
It's a nice problem ...hope you enjoy it!
Daniel