Question

(x²+y²+2xy+1)dy=(x+y)dx​

Answer 1

$( {x}^{2} + {y}^{2} + 2xy + 1)dy = (x + y)dx \\ \frac{dy}{dx} = \frac{x + y}{ {x}^{2} + {y}^{2} + 2xy + 1 }$