ANSWER
[tex]x = 248[/tex]
EXPLANATION
The given logarithmic equation is,
[tex]4 log_{4}(x + 8) = {4}^{2} [/tex]
We divide through by 4 to get,
[tex]log_{4}(x + 8) = 4[/tex]
Let us take the antilogarithm of both sides to base 4 to obtain,
[tex]x + 8 = {4}^{4} [/tex]
We evaluate the expression on the right hand side to obtain,
[tex]x + 8 = 256[/tex]
We group like terms to obtain,
[tex]x = 256 - 8[/tex]
This simplifies to,
[tex]x = 248[/tex]
The value of x is 248.