Find the value of `x` from the following: `|x4 2 2x|=0`

Find the value of x from the following: |[x,4],[ 2 ,2x]|=0

Find the value of x, from the following: |(x,4),(2,2x)|=0

Find the value of x, from the following: det[[x,42,2x]]=0

Find the value of x in the following (2^3)^4=(2^2)^x

find the values of x, y,z from the following matrix equation : 2[{:(x,y),(z,o):}]=[{:(x,6),(2,0):}]+[{:(4,x+y),(x,0):}]