The matrix associated to a generic minimal polynomial p(x)=a0+a1x+a2x2+⋯+an−1xn−1+anxn is given as;
A=(0I−a0−a)
Where I is the (n−1)×(n−1) identity matrix and a=(a1,⋯,an−1)T. A is an n×n matrix.
So, for the question,
a0=8,a=(6,−5)T,I=(1001)
A=⎝⎛010001−8−65⎠⎞
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