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

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

[[x,4,1]][[2,1,21,0,20,2,-4]][[14-1]]=0, find x

If [1, x, 2][[2,3,1],[0,4,2],[0,3,2]][[x],[1],[-1]]=0, then the value of x is

If x+y=[[1,4,3] , [-2,5,6] , [7,0,2]] and x-y=[[3,2,5] , [4,1,2] , [1,0,4]] then find x and y

If [1,x,2][[2,3,1],[0,4,2],[0,3,2]][[x],[1],[-1]]=0 , then the value of x is

IF " "[x,4,-1][[2,1,-1],[1,0,0],[2,2,4]][x,4,-1]^(TT) -0" then value of x:

Given A=[[1,-1, 0], [2, 3, 4], [0, 1, 2]], B= [[2,2,-4],[-4,2,-4],[2,-1,5]] find AB and use this to solve the system of equations: y+2x=7,x-y=3,2x+3y+4z=17

If x+2y=[[2,0,3],[1,-1,1]] and 2x-y=[[1,-4,-5],[0,2,-1]] then

If x+2y=[[2,0,3],[1,-1,1]] and 2x-y=[[1,-4,-5],[0,2,-1]] ,then

If A=[[2,3,4],[-3,0,2]], B=[[3,-4,-5],[1,2,1]] and C=[[5,-1,2],[7,0,3]] , find the matrix X such that 2A+3B=X+C