How to plot the root of polynomial in Matlab? I obtained this polynomial equations:

$$A(z) = 1 - 0.7987 z^{-1} - 0.125 z^{-2} - 0.511 z^{-3} + 0.06889 z^{-4} + 0.3465 z^{-5} + 0.4809 z^{-6} + 0.04951 z^{-7} - 0.5298 z^{-8} + 0.1828 z^{-9}$$

How do I plot the root of this polynomial equation? I want to observe how the roots are moving inside the system.
If the vector a contains the polynomial coefficients, you can compute the roots of the polynomial by

r = roots(a);

And then you can plot those roots as points in the complex plane with some marker (e.g., 'x'):

plot(r,'x')