Question

if adjacent A ls equal to 25
whereals a square matrix is of order into 3 into 3
find |A|​

Answer 1

Answer:

|A|²=10²=100

Step-by-step explanation:

cosider the following identity A(adj)A =|A| I. thus comparing it with the above

equation gives us |A| =10

now |adjA| =A^n-1 where n is the order of the square matrix

here 'n' is 3,therefore,|adjA| = |A|^3-1 =

|A|²=10²=100✌️✌️✌️