Question

How do you condense `ln z - 3 ln x`?

Answer 1

I thought this:

Explanation:

We can start by writing the `3` as exponent of the argument of the second log:
`lnz-lnx^3=`
ad then we condense the subtraction as a division of arguments:
`=ln(z/x^3)`
This is the best I got!