please help!!

First one

log (4^2x-1)  = log (3^2x+3)

 

log 4 (2x-1) = log3 ( 2x+3)

 

log4 / log3  (2x-1) = 2x+3

    1.2619 (2x-1) = 2x+3             can you take it from here?     the others are similar .....

...or you can just ignore the power and just do the exponent

 

for the first one: 

2x-1=2x+3

 

subtract 2x from both sides and add 1 to both sides to get no solutions