differential equations solution team

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Find the general solution set: $$(x^2-y^2+1)dx+(x^2-y^2-1)dy=0$$

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That's an example of a first-order nonlinear ODE. As you state in your question, you are not looking for a hint nor a step-by-step solution, but for a general solution.

General solution:

$ e^{\frac{1}{2}(y(x)+x)^2} (x-y(x)) = c1 $