Answer:
The given system of
equations can be expressed as
AX = B,
where
Therefore A is
non-singular matrix so A?1 exists and given systems has a unique
solution.
A11
= (?1)1+1 3 = 3
A12
= (?1)1+2 7 = ?7
A21
= (?1)2+1 2 = ?2
A22
= (?1)2+2 5 = 5
adj A =
Now
On equating, we
get x = 2, x = ?3.
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