Question

Dy/dx = x^4 - y^4/ (x^2 + y^2)xy

Answer 1

Answer:

Dy/dx = x^4 - y^4/ (x^2 + y^2)xy

sorry I didn't understand Ur Question

Answer 2

$\huge\mathfrak\green {☆Answer:}$

here is ur answer

x2+xy−y2=4

I hope it helps