I need to add root locus stability to show my sistem is stable or not Can please someone help me?PLEASE Its URGENT

I have to submıt my paper ınto 3 days please help me to show my sıstem ıs stable. I trıed wıth 2 two codes but I dont know how can I desrıbe the graph.

h = tf([-9.055e-11],[1 0.009618 4.544e-08]);

rlocus(h)

grid on

------------------------------------------------

s= tf('s')

G=0.0315/(1*s^3+2*s^2+10.5*s+0)

step(G)

hold on

G1=G*exp(-20*s)

step(G1)

G2=G*(1-10*s)/(1+10*s)

step(G2)

figure(2)

rlocus(G2)

***********************************************************

G =

0.0315

--------------------

s^3 + 2 s^2 + 10.5 s

G =

0.003163 s + 1.63e-05

----------------------------

s^2 + 0.009618 s + 4.544e-08

***********************************************************

[veysel burçak]

Can you check the result agaın please? because Im very new about stability