Question 1069473
resolve 2log4(5)- log4(x-4) = 2
------
If you mean solve for x:
2log4(5)- log4(x-4) = 2
{{{log(4,25)- log(4,(x-4)) = 2 = log(4,4^2) = log(4,16)}}}
25/(x-4) = 16
25 = 16x - 64
x = 89/16