First question- Use the properties of logarithms to condense.
4lnx - 5lny
Second question- Use the properties of logarithms to expand.
log23a4
So I know that the first question involves natural logs... but that's about it. I don't know how to condense/ expand logarithms- well I probably know how to, I just don't know it under that terminology.

And I can't remember what the properties of logs are.

Please help!