" If "A=[[-1,-2,-2],[2,1,-2],[2,-2,1]]" ,then show that the "

If A=[[-1,-2,-2],[2,1,-2],[2,-2,1]], show that 3adjA=A^T.

If 3A=[[1,-2,2],[-2,1,2],[-2,-2,-1]] then show that A^(-1)=A'

A=[[1,2,2],[2,1,2],[2,2,1]] , then show that A^2-4A=5I_3

(b) answer the following questions: 1. if A=[[1,2,2],[2,1,2],[2,2,1]] , then show that A^2-4A-5I_3=0

IF A=[{:(-1,-2,-2),(2,1,-2),(2,-2,1):}] then show that adj A=3A^T . Also find A^-1 .

Find the adjoint of the matrix A=[[1,2,2],[2,1,2],[2,2,1]] and hence show that A(a d j\ A)=|A|\ I_3 .

IF A=[{:(-1,-2,-2),(2,1,-2),(2,-2,1):}] then show that adjA=3A^T Also find A^-1

Find the adjoint of the matrix A=[{:(-1,-2,-2),(2,1,-2),(2,-2,1):}] and hence show that A (adj A)= |A| I_

If A=[(-1,-2,-2 ),(2, 1,-2),( 2,-2 ,1)] , show that a d j A=3A^T .

If A=[(-1,-2,-2 ),(2, 1,-2),( 2,-2 ,1)] , show that a d j\ A=3A^T .