DSolve[2*x^3*(-3 + x^2)*y[x] - x^2*(-7 + 9*x^2)*Derivative[1][y][x] + 12*x^3*Derivative[2][y][x] - (1 + 6*x^2)*Derivative[3][y][x] + x*Derivative[4][y][x] == 0,y[x],x]