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Regional Olympiad - FBH 2018 Grade 10 Problem 2

Source: Regional Olympiad - Federation of Bosnia and Herzegovina 2018

September 18, 2018
IntegerPerfect Squaresnumber theory

Problem Statement

Find all positive integers nn such that number n4−4n3+22n2−36n+18n^4-4n^3+22n^2-36n+18 is perfect square of positive integer
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