MathDB

2

Part of 2011 Finnish National High School Mathematics Competition

Problems(1)

Solve $x^4-12x^2+x^2y^2+30\leq 0$ in Z

Source: Finland 2011, Problem 2

5/5/2013
Find all integers xx and yy satisfying the inequality x4−12x2+x2y2+30≤0.x^4-12x^2+x^2y^2+30\leq 0.
inequalitiesalgebra unsolvedalgebra