OJM,Botosani,1995

[Madalina Daniela]

Screenshot_2012-12-03-21-11-00.jpg (47.75 KiB) Vizualizat de 1771 ori

[mihai miculita]

INDICATIE: $1995-2x^2-8y^2+8xy-2x+4y=$$1995-2.\left[\left(x-2y+\dfrac{1}{2}\right)^2-\dfrac{1}{4}\right].$