The solution to the differential equation (x²2 -4xy-2y²)dx+(y² -4xy-2x²)dy=0 a. y²(y-6x)+x²(x-6y)=c b. y²(x−6y)+x²(y-6x)=c c. x²(y-6x) + y²(x-6y)=c d. x²(x-6y)+y²(y-6x)=c

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