do I solve it further like this:
2u (square) - 6uv +uv - 3v (square)
and then factorise?
After factorisation, I got:
sin x - 3 cos x = 0
or 2 sinx + cos x = 0
If I substitute, short equations like 7 cos x = 0 are coming up, through which it is not possible to deduce an answer mathematically.