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Mathematics
Mathematics
Problem
Simplify
3
(
A
−
B
)
−
(
A
−
2
B
)
3(A-B)-(A-2B)
3
(
A
−
B
)
−
(
A
−
2
B
)
, where
A
A
A
and
B
B
B
are matrices of the same order.
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