I know how to solve these problems with the same base but i don't know what to do when the base isn't the same. Any help?
log x + log(x - 3) = 1
We see the left side of the equation becomes
But note that [I'm assuming that when you refer to log, you mean it is of base 10]
So we see that
This is true only when
Solve this quadratic equation and see what x values you get.
Does this make sense?