If `|[x,2,0],[2,x,0],[0,0,1]|+|[y,1],[0,0]|+|[0,1],[0,z]|=0`,then find `x`

If [[1,0,0],[0,1,0],[0,0,1]][[x],[y],[z]]=[[1],[-1],[0]] then value of (x+y+z)is

If [[1,0,0],[0,y,0],[0,0,1]][[x],[-1],[z]]=[[1],[2],[1]], then the value of x+y+z is

If [[x, 4, 1]] [[2,-1,2] , [1,0,2] , [0,2,-4]] [[x], [4], [1]]=0 then find x

If [x1][[1,0-2,0]]=O, find x

.If [[x-1,2,y-5],[z,0,2],[1,-1,1+a]]=[[1-x,2,-y],[2,0,2],[1,-1,1]] then find x,y,z,a

6.If A=[[x,0,0],[0,y,0],[0,0,z]] then A^(-1) is

If [[x,4,1]][[2,1,2],[1,0,2],[0,2,-4]][[x],[4],[-1]]=0 Find x

If x, y, z are non-zero real numbers, then the inverse of matrix A=[(x,0, 0) ,(0,y,0),( 0, 0,z)] is (A) [[x^(-1),0,0],[0,y^(-1),0],[0,0,z^(-1)]] (B) xyz[[x^(-1),0,0],[0,y^(-1),0],[0,0,z^(-1)]] (C) (1)/(xyz)[[x,0,0],[0,y,0],[0,0,z]]] (D) (1)/(xyz)[[1,0,0],[0,1,0],[0,0,1]]

If [(1,2,1)][(1,2,0),(2,0,1),(1,0,2)] [(0),(2),(x)] = 0 , then the value of x is

If [(1, 0 ,0 ),(0,y,0),( 0, 0, 1)][(x),(-1),(z)]=[(1),( 0),( 1)] , find x ,\ y\ a n d\ z .