MATLAB: How to create this matrix without hardcoding the values

Question

13 -1 5

-22 10 -87

Answer 1

Here is one way.

r = [ 1.5355 + 0.0000i
     -1.0914 + 1.0781i
     -1.0914 - 1.0781i
      0.3621 + 1.3117i
      0.3621 - 1.3117i]';
 
 p = reshape(round(13*poly(r)),[3 2])';