log4(2*256x^4)

i know that
log4(2)+log4(256)+log4(x^4)
=
log2^2(2)+4+4log4(x)
but now I am stuck

thanks

from your

log4(2)+log4(256)+log4(x^4)

= 1/2 + 4 + 4log4 x
= 4.5 + 4log4 x