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Mathematics
Mathematics
Problem
If
A
=
[
1
2
2
2
1
2
2
2
1
]
A = \begin{bmatrix} 1 & 2 & 2 \\ 2 & 1 & 2 \\ 2 & 2 & 1 \end{bmatrix}
A
=
1
2
2
2
1
2
2
2
1
, then find the value of
(
A
2
−
4
A
+
5
I
)
3
(A^2 - 4A + 5I)^3
(
A
2
−
4
A
+
5
I
)
3
.
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