Precalculus Examples

$\frac{\log_{5} (x)}{3} + \frac{\log_{5} (y)}{3} + \frac{\log_{5} (z)}{3} \cdot \frac{\log_{5} (w)}{3}$

Step 1

Combine the numerators over the common denominator.

$\frac{\log_{5} (z)}{3} \cdot \frac{\log_{5} (w)}{3} + \frac{\log_{5} (x) + \log_{5} (y)}{3}$

Step 2

Use the product property of logarithms, $\log_{b} (x) + \log_{b} (y) = \log_{b} (x y)$ .

$\frac{\log_{5} (z)}{3} \cdot \frac{\log_{5} (w)}{3} + \frac{\log_{5} (x y)}{3}$

Step 3

Simplify each term.

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Step 3.1

Rewrite $\frac{\log_{5} (z)}{3}$ as $\frac{1}{3} \log_{5} (z)$ .

$\frac{1}{3} \log_{5} (z) \cdot \frac{\log_{5} (w)}{3} + \frac{\log_{5} (x y)}{3}$

Step 3.2

Simplify $\frac{1}{3} \log_{5} (z)$ by moving $\frac{1}{3}$ inside the logarithm.

$\log_{5} (z^{\frac{1}{3}}) \cdot \frac{\log_{5} (w)}{3} + \frac{\log_{5} (x y)}{3}$

Step 3.3

Rewrite $\frac{\log_{5} (w)}{3}$ as $\frac{1}{3} \log_{5} (w)$ .

$\log_{5} (z^{\frac{1}{3}}) \cdot (\frac{1}{3} \log_{5} (w)) + \frac{\log_{5} (x y)}{3}$

Step 3.4

Simplify $\frac{1}{3} \log_{5} (w)$ by moving $\frac{1}{3}$ inside the logarithm.

$\log_{5} (z^{\frac{1}{3}}) \cdot \log_{5} (w^{\frac{1}{3}}) + \frac{\log_{5} (x y)}{3}$

Step 3.5

Rewrite $\frac{\log_{5} (x y)}{3}$ as $\frac{1}{3} \log_{5} (x y)$ .

$\log_{5} (z^{\frac{1}{3}}) \log_{5} (w^{\frac{1}{3}}) + \frac{1}{3} \log_{5} (x y)$

Step 3.6

Simplify $\frac{1}{3} \log_{5} (x y)$ by moving $\frac{1}{3}$ inside the logarithm.

$\log_{5} (z^{\frac{1}{3}}) \log_{5} (w^{\frac{1}{3}}) + \log_{5} ({(x y)}^{\frac{1}{3}})$

Step 3.7

Apply the product rule to $x y$ .

$\log_{5} (z^{\frac{1}{3}}) \log_{5} (w^{\frac{1}{3}}) + \log_{5} (x^{\frac{1}{3}} y^{\frac{1}{3}})$