Precalculus Examples

$8 \log_{a} (0.25 m) + 12 \log_{a} (0.25 n) - 3 \log_{a} (0.25 a) + 5 \log_{a} (0.25 b)$

Step 1

Simplify each term.

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Step 1.1

Simplify $8 \log_{a} (0.25 m)$ by moving $8$ inside the logarithm.

$\log_{a} ({(0.25 m)}^{8}) + 12 \log_{a} (0.25 n) - 3 \log_{a} (0.25 a) + 5 \log_{a} (0.25 b)$

Step 1.2

Apply the product rule to $0.25 m$ .

$\log_{a} ({0.25}^{8} m^{8}) + 12 \log_{a} (0.25 n) - 3 \log_{a} (0.25 a) + 5 \log_{a} (0.25 b)$

Step 1.3

Raise $0.25$ to the power of $8$ .

$\log_{a} (0.00001525 m^{8}) + 12 \log_{a} (0.25 n) - 3 \log_{a} (0.25 a) + 5 \log_{a} (0.25 b)$

Step 1.4

Simplify $12 \log_{a} (0.25 n)$ by moving $12$ inside the logarithm.

$\log_{a} (0.00001525 m^{8}) + \log_{a} ({(0.25 n)}^{12}) - 3 \log_{a} (0.25 a) + 5 \log_{a} (0.25 b)$

Step 1.5

Apply the product rule to $0.25 n$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} ({0.25}^{12} n^{12}) - 3 \log_{a} (0.25 a) + 5 \log_{a} (0.25 b)$

Step 1.6

Raise $0.25$ to the power of $12$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - 3 \log_{a} (0.25 a) + 5 \log_{a} (0.25 b)$

Step 1.7

Simplify $- 3 \log_{a} (0.25 a)$ by moving $3$ inside the logarithm.

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - \log_{a} ({(0.25 a)}^{3}) + 5 \log_{a} (0.25 b)$

Step 1.8

Apply the product rule to $0.25 a$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - \log_{a} ({0.25}^{3} a^{3}) + 5 \log_{a} (0.25 b)$

Step 1.9

Rewrite $\log_{a} ({0.25}^{3} a^{3})$ as $\log_{a} ({0.25}^{3}) + \log_{a} (a^{3})$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - (\log_{a} ({0.25}^{3}) + \log_{a} (a^{3})) + 5 \log_{a} (0.25 b)$

Step 1.10

Use logarithm rules to move $3$ out of the exponent.

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - (\log_{a} ({0.25}^{3}) + 3 \log_{a} (a)) + 5 \log_{a} (0.25 b)$

Step 1.11

Logarithm base $a$ of $a$ is $1$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - (\log_{a} ({0.25}^{3}) + 3 \cdot 1) + 5 \log_{a} (0.25 b)$

Step 1.12

Multiply $3$ by $1$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - (\log_{a} ({0.25}^{3}) + 3) + 5 \log_{a} (0.25 b)$

Step 1.13

Raise $0.25$ to the power of $3$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - (\log_{a} (0.015625) + 3) + 5 \log_{a} (0.25 b)$

Step 1.14

Apply the distributive property.

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - \log_{a} (0.015625) - 1 \cdot 3 + 5 \log_{a} (0.25 b)$

Step 1.15

Multiply $- 1$ by $3$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - \log_{a} (0.015625) - 3 + 5 \log_{a} (0.25 b)$

Step 1.16

Simplify $5 \log_{a} (0.25 b)$ by moving $5$ inside the logarithm.

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - \log_{a} (0.015625) - 3 + \log_{a} ({(0.25 b)}^{5})$

Step 1.17

Apply the product rule to $0.25 b$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - \log_{a} (0.015625) - 3 + \log_{a} ({0.25}^{5} b^{5})$

Step 1.18

Raise $0.25$ to the power of $5$ .

$\log_{a} (0.00001525 m^{8}) + \log_{a} (0.00000005 n^{12}) - \log_{a} (0.015625) - 3 + \log_{a} (0.00097656 b^{5})$

Step 2

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

$\log_{a} (0.00001525 m^{8} (0.00000005 n^{12})) - \log_{a} (0.015625) - 3 + \log_{a} (0.00097656 b^{5})$

Step 3

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

$\log_{a} (\frac{0.00001525 m^{8} (0.00000005 n^{12})}{0.015625}) - 3 + \log_{a} (0.00097656 b^{5})$

Step 4

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

$\log_{a} (\frac{0.00001525 m^{8} (0.00000005 n^{12})}{0.015625} (0.00097656 b^{5})) - 3$

Step 5

Simplify each term.

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Step 5.1

Rewrite using the commutative property of multiplication.

$\log_{a} (0.00097656 \frac{0.00001525 m^{8} \cdot 0.00000005 n^{12}}{0.015625} b^{5}) - 3$

Step 5.2

Cancel the common factor of $0.00097656$ .

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Step 5.2.1

Factor $0.00097656$ out of $0.015625$ .

$\log_{a} (0.00097656 \frac{0.00001525 m^{8} \cdot 0.00000005 n^{12}}{0.00097656 (16)} b^{5}) - 3$

Step 5.2.2

Cancel the common factor.

$\log_{a} (0.00097656 \frac{0.00001525 m^{8} \cdot 0.00000005 n^{12}}{0.00097656 \cdot 16} b^{5}) - 3$

Step 5.2.3

Rewrite the expression.

$\log_{a} (\frac{0.00001525 m^{8} \cdot 0.00000005 n^{12}}{16} b^{5}) - 3$

Step 5.3

Cancel the common factor of $0.00001525$ .

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Step 5.3.1

Factor $0.00001525$ out of $0.00001525 m^{8} \cdot 0.00000005 n^{12}$ .

$\log_{a} (\frac{0.00001525 (m^{8} \cdot 0.00000005 n^{12})}{16} b^{5}) - 3$

Step 5.3.2

Cancel the common factor.

$\log_{a} (\frac{0.00001525 (m^{8} \cdot 0.00000005 n^{12})}{16} b^{5}) - 3$

Step 5.3.3

Rewrite the expression.

$\log_{a} (\frac{m^{8} \cdot 0.00000005 n^{12}}{16} \cdot \frac{b^{5}}{65536}) - 3$

Step 5.4

Multiply $\frac{m^{8} \cdot 0.00000005 n^{12}}{16}$ by $\frac{b^{5}}{65536}$ .

$\log_{a} (\frac{m^{8} \cdot 0.00000005 n^{12} b^{5}}{16 \cdot 65536}) - 3$

Step 5.5

Multiply $16$ by $65536$ .

$\log_{a} (\frac{m^{8} \cdot 0.00000005 n^{12} b^{5}}{1048576}) - 3$

Step 5.6

Move $0.00000005$ to the left of $m^{8}$ .

$\log_{a} (\frac{0.00000005 \cdot m^{8} n^{12} b^{5}}{1048576}) - 3$

Step 5.7

Factor $0.00000005$ out of $0.00000005 \cdot m^{8} n^{12} b^{5}$ .

$\log_{a} (\frac{0.00000005 (m^{8} n^{12} b^{5})}{1048576}) - 3$

Step 5.8

Factor $1048576$ out of $1048576$ .

$\log_{a} (\frac{0.00000005 (m^{8} n^{12} b^{5})}{1048576 (1)}) - 3$

Step 5.9

Separate fractions.

$\log_{a} (\frac{0.00000005}{1048576} \cdot \frac{m^{8} n^{12} b^{5}}{1}) - 3$

Step 5.10

Divide $0.00000005$ by $1048576$ .

$\log_{a} (0 \frac{m^{8} n^{12} b^{5}}{1}) - 3$

Step 5.11

Divide $m^{8} n^{12} b^{5}$ by $1$ .

$\log_{a} (0 m^{8} n^{12} b^{5}) - 3$