We have,

We have to find A^-1 and

Firstly, we find |A|

Expanding |A| along C₁, we get

= 2(0 – 1) + 3(-2 – 4) – 1(-1 – 0)

= 2(-1) + 3(-6) – 1(-1)

= -2 – 18 + 1

= -19

Now, we have to find adj A and for that we have to find co-factors:

Ans.