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Dx y. (X+3)dy-(y+2)DX=0. X²dy − y²dx = 0. Dy/x-1=DX/Y-2. X(Y^2-1)DX+Y(X^2-1)dy=0.
(X+3)dy-(y+2)DX=0. X²dy − y²dx = 0. Dy/x-1=DX/Y-2. X(Y^2-1)DX+Y(X^2-1)dy=0.

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