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Dx y. 2x(x^2+y)DX=dy. Dy/x-1=DX/Y-2. Y^2+X^2*(dy/DX)=X*Y*(dy/DX). Dy/DX= Y-X^2.
2x(x^2+y)DX=dy. Dy/x-1=DX/Y-2. Y^2+X^2*(dy/DX)=X*Y*(dy/DX). Dy/DX= Y-X^2.

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