Question

someone PLZZ answer this question ​

Answer 1

Answer:

The correct answer is option(B) = -2

Step-by-step explanation:

• A = 1   2
•       3   4

Adj (A) = 4     -2

             -3      1    (Adj A is found by  crossly alternate the numbers in position 1 and 4 and just just put - signs for numbers at positions 2 and 3)

on multiplying it will give -2I .

HOPE THIS HELPS YOU A LITTLE