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Mathematics
Mathematics
Problem
For a scalar
k
k
k
and a square matrix
A
A
A
of order
n
n
n
, simplify
(
k
+
2
)
A
−
3
(
2
A
−
I
n
)
+
4
I
n
(k+2)A-3(2A-I_n)+4I_n
(
k
+
2
)
A
−
3
(
2
A
−
I
n
)
+
4
I
n
.
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