Question

How do you condense `log 40 - log 4`?

Answer 1

`log40-log4` = `log(40/4)` = `log10 = 1`

Explanation:

Use the quotient property of logarithms,
`log_b(x)-log_b(y)` = `log_b(x/y)`

`log40-log4` = `log(40/4)` = `log10 = 1`

Note:
`log_b(b)=1` ---> hence `log_10(10) = 1`