Solve 2xy + 4
Solve for what? x? y? And what does it equal? zero perhaps?
2xy + 4 = 0
Then solving for x gives,
x = (-4/2y) = -2/y.
Solving for y gives
y = (-4/2x) = -2/x
2xy + 4 = 0
Then solving for x gives,
x = (-4/2y) = -2/y.
Solving for y gives
y = (-4/2x) = -2/x