Precalculus Examples

$\log (10^{- 9})$

Step 1

Use logarithm rules to move $- 9$ out of the exponent.

$- 9 \log (10)$

Step 2

Logarithm base $10$ of $10$ is $1$ .

$- 9 \cdot 1$

Step 3

Multiply $- 9$ by $1$ .

$- 9$