If `A=[[1,0,0],[0,1,0],[a,b,-1]]`, find` A^2`

If A=[[1,0,0],[0,1,0],[a,b,-1]] and A=A^(-1) then a+b=?

If [[1,0,0],[0,2,0],[3,0,-1]] and A^20 +alphaA^19+betaA=[[1,0,0],[0,4,0],[0,0,1]] Find the value of (alpha+beta)

"Find the value of "|A||adjA|" if,"A=[[1,0,0],[0,-1,0],[0,0,-1]]

If {:A=[(1,0,0),(0,1,0),(a,b,-1)]:} , then A^2 is equal to

If A=[[1,3,2],[-1,2,0],[0,-1,1]] , then find a matrix X such that A^(2)-2A-X=0

If A=[[1,0],[0,1]],B=[[1,0],[0,-1]] and C=[[0,1],[1,0]] then show that A^(2)=B^(2)=C^(2)

If A=[[0,a,b],[-a,0,c],[-b,-c,0]] , find 1/2 (A+A\') and 1/2 (A-A\')

If A=[[0,a,b],[-a,0,c],[-b,-c,0]] find (1)/(2)(A+A') and (1)/(2)(A-A')