Precalculus Examples

$3 \log_{2} (5 x + 6) - \frac{1}{2} \log_{2} (x - 4)$

Step 1

Simplify each term.

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Step 1.1

Simplify $3 \log_{2} (5 x + 6)$ by moving $3$ inside the logarithm.

$\log_{2} ({(5 x + 6)}^{3}) - \frac{1}{2} \cdot \log_{2} (x - 4)$

Step 1.2

Multiply $- \frac{1}{2} \log_{2} (x - 4)$ .

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Step 1.2.1

Reorder $\log_{2} (x - 4)$ and $\frac{1}{2}$ .

$\log_{2} ({(5 x + 6)}^{3}) - (\frac{1}{2} \log_{2} (x - 4))$

Step 1.2.2

Simplify $\frac{1}{2} \log_{2} (x - 4)$ by moving $\frac{1}{2}$ inside the logarithm.

$\log_{2} ({(5 x + 6)}^{3}) - \log_{2} ({(x - 4)}^{\frac{1}{2}})$

Step 2

Use the quotient property of logarithms, $\log_{b} (x) - \log_{b} (y) = \log_{b} (\frac{x}{y})$ .

$\log_{2} (\frac{{(5 x + 6)}^{3}}{{(x - 4)}^{\frac{1}{2}}})$