Precalculus Examples

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

Step 1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x^{2} + 4}$ as ${(x^{2} + 4)}^{\frac{1}{2}}$ .

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

Step 2

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[5]{x - 1}$ as ${(x - 1)}^{\frac{1}{5}}$ .

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

Step 3

Expand $\log_{3} ({(\frac{2 x {(x^{2} + 4)}^{\frac{1}{2}}}{3 {(x - 1)}^{\frac{1}{5}}})}^{2})$ by moving $2$ outside the logarithm.

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

Step 4

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

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

Step 5

Rewrite $\log_{3} (2 x {(x^{2} + 4)}^{\frac{1}{2}})$ as $\log_{3} (2 x) + \log_{3} ({(x^{2} + 4)}^{\frac{1}{2}})$ .

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

Step 6

Rewrite $\log_{3} (2 x)$ as $\log_{3} (2) + \log_{3} (x)$ .

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

Step 7

Expand $\log_{3} ({(x^{2} + 4)}^{\frac{1}{2}})$ by moving $\frac{1}{2}$ outside the logarithm.

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

Step 8

Rewrite $\log_{3} (3 {(x - 1)}^{\frac{1}{5}})$ as $\log_{3} (3) + \log_{3} ({(x - 1)}^{\frac{1}{5}})$ .

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

Step 9

Expand $\log_{3} ({(x - 1)}^{\frac{1}{5}})$ by moving $\frac{1}{5}$ outside the logarithm.

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

Step 10

Logarithm base $3$ of $3$ is $1$ .

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

Step 11

Simplify each term.

Tap for more steps...

Step 11.1

Combine $\frac{1}{2}$ and $\log_{3} (x^{2} + 4)$ .

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

Step 11.2

Combine $\frac{1}{5}$ and $\log_{3} (x - 1)$ .

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

Step 11.3

Write $1$ as a fraction with a common denominator.

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

Step 11.4

Combine the numerators over the common denominator.

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

Step 12

To write $\log_{3} (2)$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

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

Step 13

Combine $\log_{3} (2)$ and $\frac{2}{2}$ .

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

Step 14

Combine the numerators over the common denominator.

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

Step 15

Move $2$ to the left of $\log_{3} (2)$ .

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

Step 16

Apply the distributive property.

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

Step 17

Simplify.

Tap for more steps...

Step 17.1

Cancel the common factor of $2$ .

Tap for more steps...

Step 17.1.1

Cancel the common factor.

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

Step 17.1.2

Rewrite the expression.

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

Step 17.2

Multiply $2 (- \frac{5 + \log_{3} (x - 1)}{5})$ .

Tap for more steps...

Step 17.2.1

Multiply $- 1$ by $2$ .

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

Step 17.2.2

Combine $- 2$ and $\frac{5 + \log_{3} (x - 1)}{5}$ .

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

Step 18

Move the negative in front of the fraction.

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

Step 19

To write $2 \log_{3} (2)$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

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

Step 20

Combine $2 \log_{3} (2)$ and $\frac{5}{5}$ .

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

Step 21

Combine the numerators over the common denominator.

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

Step 22

Simplify the numerator.

Tap for more steps...

Step 22.1

Factor $2$ out of $2 \log_{3} (2) \cdot 5 - 2 (5 + \log_{3} (x - 1))$ .

Tap for more steps...

Step 22.1.1

Factor $2$ out of $2 \log_{3} (2) \cdot 5$ .

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

Step 22.1.2

Factor $2$ out of $- 2 (5 + \log_{3} (x - 1))$ .

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

Step 22.1.3

Factor $2$ out of $2 (\log_{3} (2) \cdot 5) + 2 (- (5 + \log_{3} (x - 1)))$ .

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

Step 22.2

Move $5$ to the left of $\log_{3} (2)$ .

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

Step 22.3

Apply the distributive property.

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

Step 22.4

Multiply $- 1$ by $5$ .

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

Step 23

To write $\log_{3} (x^{2} + 4)$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

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

Step 24

Combine $\log_{3} (x^{2} + 4)$ and $\frac{5}{5}$ .

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

Step 25

Combine the numerators over the common denominator.

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

Step 26

Simplify the numerator.

Tap for more steps...

Step 26.1

Move $5$ to the left of $\log_{3} (x^{2} + 4)$ .

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

Step 26.2

Apply the distributive property.

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

Step 26.3

Simplify.

Tap for more steps...

Step 26.3.1

Multiply $5$ by $2$ .

$2 \log_{3} (x) + \frac{5 \log_{3} (x^{2} + 4) + 10 \log_{3} (2) + 2 \cdot - 5 + 2 (- \log_{3} (x - 1))}{5}$

Step 26.3.2

Multiply $2$ by $- 5$ .

$2 \log_{3} (x) + \frac{5 \log_{3} (x^{2} + 4) + 10 \log_{3} (2) - 10 + 2 (- \log_{3} (x - 1))}{5}$

Step 26.3.3

Multiply $- 1$ by $2$ .

$2 \log_{3} (x) + \frac{5 \log_{3} (x^{2} + 4) + 10 \log_{3} (2) - 10 - 2 \log_{3} (x - 1)}{5}$

Step 27

To write $2 \log_{3} (x)$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$2 \log_{3} (x) \cdot \frac{5}{5} + \frac{5 \log_{3} (x^{2} + 4) + 10 \log_{3} (2) - 10 - 2 \log_{3} (x - 1)}{5}$

Step 28

Combine $2 \log_{3} (x)$ and $\frac{5}{5}$ .

$\frac{2 \log_{3} (x) \cdot 5}{5} + \frac{5 \log_{3} (x^{2} + 4) + 10 \log_{3} (2) - 10 - 2 \log_{3} (x - 1)}{5}$

Step 29

Combine the numerators over the common denominator.

$\frac{2 \log_{3} (x) \cdot 5 + 5 \log_{3} (x^{2} + 4) + 10 \log_{3} (2) - 10 - 2 \log_{3} (x - 1)}{5}$

Step 30

Multiply $5$ by $2$ .

$\frac{10 \log_{3} (x) + 5 \log_{3} (x^{2} + 4) + 10 \log_{3} (2) - 10 - 2 \log_{3} (x - 1)}{5}$