Precalculus Examples

$9 \log_{9} (4)$

Step 1

Rewrite $\log_{9} (4)$ as $\log_{9} (2^{2})$ .

$9 \log_{9} (2^{2})$

Step 2

Expand $\log_{9} (2^{2})$ by moving $2$ outside the logarithm.

$9 (2 \log_{9} (2))$

Step 3

Multiply $2$ by $9$ .

$18 \log_{9} (2)$