x=2, y=1/2 olsun.
A=x²-2xy=2²-2.2.1/2=2
B=x²-4y²=2²-4.(1/2)²=3
C=5y²-xy=5.(1/2)²-2.1/2=5/4 -1=5/4-4/4=1/4
O halde,
B>A>C
