Thread: Help with logarithms, please?

I'm terrible at logarithms ^^;;

I'd really like some help learning how to solve these kinds of equations:
8^x=4
9^x=27

I also dont get how to write logarithmic expressions as single logarithms when a problem like: log (x-1)^2-log (3x/4)^2. I dont understand what to do with the square...

I have the same problem with expanding equations with squares in them like: log base of 2 (x + 1)^2
log base of 4 r^2 t

Help would be much appreciated :]

Originally Posted by raspberry heaven

I'm terrible at logarithms ^^;;

I'd really like some help learning how to solve these kinds of equations:
8^x=4
9^x=27

you do not need logarithms for these. jsut express both sides in terms of the same base

Originally Posted by raspberry heaven

I also dont get how to write logarithmic expressions as single logarithms when a problem like: log (x-1)^2-log (3x/4)^2. I dont understand what to do with the square...

you should look up the laws of logarithms. . x and y can be functions here. doesn't matter if they are squared or not.

I have the same problem with expanding equations with squares in them like: log base of 2 (x + 1)^2

another rule of logarithms is. so, etc. i put absolute values because the square would keep thing positive always