Answer:
Step-by-step explanation:
Given is a 2x2 square matrix A as
[tex]\left[\begin{array}{ccc}3&0\\2&-1\\\end{array}\right][/tex]
|A|=6
Cofactors are
[tex]\left[\begin{array}{ccc}-1&-2\\0&3\end{array}\right][/tex]
adj matrix = [tex]\left[\begin{array}{ccc}-1&0\\-2&3\end{array}\right][/tex]
Hence Inverse of A
=[tex]\frac{1}{6} \left[\begin{array}{ccc}-1&0\\-2&3\end{array}\right][/tex]
