Precalculus Examples

$\frac{3}{8} \cdot \log_{a} (x^{16} y^{8}) + 9 \log_{a} (x^{\frac{4}{9}}) - 12 \log_{a} (y)$

Step 1

Rewrite $\log_{a} (x^{16} y^{8})$ as $\log_{a} (x^{16}) + \log_{a} (y^{8})$ .

$\frac{3}{8} \cdot (\log_{a} (x^{16}) + \log_{a} (y^{8})) + 9 \log_{a} (x^{\frac{4}{9}}) - 12 \log_{a} (y)$

Step 2

Expand $\log_{a} (x^{16})$ by moving $16$ outside the logarithm.

$\frac{3}{8} \cdot (16 \log_{a} (x) + \log_{a} (y^{8})) + 9 \log_{a} (x^{\frac{4}{9}}) - 12 \log_{a} (y)$

Step 3

Expand $\log_{a} (y^{8})$ by moving $8$ outside the logarithm.

$\frac{3}{8} \cdot (16 \log_{a} (x) + 8 \log_{a} (y)) + 9 \log_{a} (x^{\frac{4}{9}}) - 12 \log_{a} (y)$

Step 4

Expand $\log_{a} (x^{\frac{4}{9}})$ by moving $\frac{4}{9}$ outside the logarithm.

$\frac{3}{8} \cdot (16 \log_{a} (x) + 8 \log_{a} (y)) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5

Simplify each term.

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Step 5.1

Apply the distributive property.

$\frac{3}{8} (16 \log_{a} (x)) + \frac{3}{8} (8 \log_{a} (y)) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.2

Cancel the common factor of $8$ .

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Step 5.2.1

Factor $8$ out of $16 \log_{a} (x)$ .

$\frac{3}{8} (8 (2 \log_{a} (x))) + \frac{3}{8} (8 \log_{a} (y)) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.2.2

Cancel the common factor.

$\frac{3}{8} (8 (2 \log_{a} (x))) + \frac{3}{8} (8 \log_{a} (y)) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.2.3

Rewrite the expression.

$3 (2 \log_{a} (x)) + \frac{3}{8} (8 \log_{a} (y)) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.3

Multiply $2$ by $3$ .

$6 \log_{a} (x) + \frac{3}{8} (8 \log_{a} (y)) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.4

Cancel the common factor of $8$ .

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Step 5.4.1

Factor $8$ out of $8 \log_{a} (y)$ .

$6 \log_{a} (x) + \frac{3}{8} (8 (\log_{a} (y))) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.4.2

Cancel the common factor.

$6 \log_{a} (x) + \frac{3}{8} (8 \log_{a} (y)) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.4.3

Rewrite the expression.

$6 \log_{a} (x) + 3 \log_{a} (y) + 9 (\frac{4}{9} \log_{a} (x)) - 12 \log_{a} (y)$

Step 5.5

Combine $\frac{4}{9}$ and $\log_{a} (x)$ .

$6 \log_{a} (x) + 3 \log_{a} (y) + 9 \frac{4 \log_{a} (x)}{9} - 12 \log_{a} (y)$

Step 5.6

Cancel the common factor of $9$ .

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Step 5.6.1

Cancel the common factor.

$6 \log_{a} (x) + 3 \log_{a} (y) + 9 \frac{4 \log_{a} (x)}{9} - 12 \log_{a} (y)$

Step 5.6.2

Rewrite the expression.

$6 \log_{a} (x) + 3 \log_{a} (y) + 4 \log_{a} (x) - 12 \log_{a} (y)$

Step 6

Add $6 \log_{a} (x)$ and $4 \log_{a} (x)$ .

$10 \log_{a} (x) + 3 \log_{a} (y) - 12 \log_{a} (y)$

Step 7

Subtract $12 \log_{a} (y)$ from $3 \log_{a} (y)$ .

$10 \log_{a} (x) - 9 \log_{a} (y)$