DSolve[-(y[x]^2*(-1 + x^4*y[x]^2)) + 2*x^3*y[x]^3*(-x^2 + y[x]^2)*Derivative[1][y][x] + x^2*(-1 + x^2*y[x]^4)*Derivative[1][y][x]^2 == 0,y[x],x]