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Regional Olympiad - FBH 2014 Grade 9 Problem 1

Source: Regional Olympiad - Federation of Bosnia and Herzegovina 2014

September 24, 2018
valuealgebra

Problem Statement

Find all possible values of (a+bc)2(ac)(bc)+(b+ca)2(ba)(ca)+(c+ab)2(cb)(ab)\frac{(a+b-c)^2}{(a-c)(b-c)}+\frac{(b+c-a)^2}{(b-a)(c-a)}+\frac{(c+a-b)^2}{(c-b)(a-b)}