If `A=[-1 0 0 0-1 0 0 0-1]` , find `A^3` .

If A=[[-1, 0 ,0], [0,-1, 0], [0, 0,-1]] , find A^2 .

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]] , find A^2

If A = [(0, 0, 1),(0, 1, 0),(1, 0, 0)] find A^2 .

Which of the following is (are) NOT the square of a 3xx3 matrix with real entries? [1 0 0 0 1 0 0 0-1] (b) [-1 0 0 0-1 0 0 0-1] [1 0 0 0 1 0 0 0 1] (d) [1 0 0 0-1 0 0 0-1]

If A[(1, 0, 0),(x, 1, 0),(x, x, 1)] and I=[(1, 0, 0),(0,1,0),(0,0,1)] , then A^(3)-3A^(2)+3A is equal to

Which of the following is (are) NOT the square of a 3xx3 matrix with real entries? (a)[[1, 0, 0],[ 0, 1, 0],[ 0, 0,-1]] (b) [[-1, 0, 0] ,[0,-1, 0],[ 0, 0, -1]] (c)[[1, 0, 0],[ 0, 1, 0],[ 0, 0, 1]] (d) [[1, 0, 0],[ 0,-1, 0],[ 0, 0,-1]]

If A=[(1,0,0),(0,-1,0),(0,0,2)] and B=[(2,0,0),(0, 3,0),(0,0,-1)] , find A+B , 3A+4B .

If [ [ 1 , 0 , 0 ] , [ 0 ,1 , 0 ] , [ 0 , 0 , 1 ] ] [ [ a ] , [ b ] , [ c ] ] = [ [ 2 ] , [ 1 ] , [ -3 ] ] , then find the value of a + b + c