solve log4(x-3)+log4(x+3)=2
Solve: log4(x - 3) + log4(x + 3) = 2
---> log4 [ (x - 3)(x + 3) ] = 2
---> (x - 3)(x + 3) = 42
---> x2 - 9 = 16
---> x2 = 25
---> x = 5 (The possible solution -5 doesn't check.)
