(simple) find where the graph intresect

[seto6]

Homework Statement

f(x,y)=(2x²+y²-5
f(x.y)=2xy-1

Homework Equations

non

The Attempt at a Solution

i set both of then equal to each other and i got the following:
2x²+y²-2xy-4=0
\after this step I am kind of lost...

not sure what to do

 

[seto6]

also not sure how to separate the x and the y

 

[seto6]

some1 pls..