Question

x^2+y^2/xy - x^2/xy-y^2 + y^2/x^2-xy = ?

Answer 1

kindly use brackets else draw to make the question clear and easy to understand :)

Answer 2

Assuming you mean (x²+y²)/xy - x²/(xy-y²) + y²/(x²-xy), according to Wolfram Alpha, the answer is -1.