Please tell me you're joking?!?! I found an answer where x and y were equal to one another in the first 30 minutes of working on the problem but I had assumed I had made a mistake! Thank you lol.
The attempt at a solution:
I tried the normal method to find the determinant equal to 2j. I ended up with:
2j = -4yj -2xj -2j -x +y
then I tried to see if I had to factorize with j so I didn't turn the j^2 into -1 and ended up with 2 different options:
1) 0= y(-4j-j^2) -x(2j-1) -2j
2)...