Explanation:
simplify
log(x)/log(4) = 0
log(4x)/log(4) = 1
expand
2log(5)/log(4) + log(4x)/log(4) = log(100)/log(4)
factor
2log(5) + log (4x) / log(4) = log (100) / log (4)
then
x=1
4.5m questions
5.7m answers