Algebra Examples

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

Step 1

Simplify each term.

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Step 1.1

Simplify $\frac{1}{3} \log ({(x - 1)}^{3})$ by moving $\frac{1}{3}$ inside the logarithm.

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

Step 1.2

Multiply the exponents in ${({(x - 1)}^{3})}^{\frac{1}{3}}$ .

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Step 1.2.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

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

Step 1.2.2

Cancel the common factor of $3$ .

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Step 1.2.2.1

Cancel the common factor.

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

Step 1.2.2.2

Rewrite the expression.

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

Step 1.3

Simplify.

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

Step 1.4

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

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

Step 1.5

Factor $x^{2} - x - 6$ using the AC method.

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Step 1.5.1

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $- 6$ and whose sum is $- 1$ .

$- 3, 2$

Step 1.5.2

Write the factored form using these integers.

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

Step 1.6

Simplify $\frac{1}{2} \log (\frac{x^{4}}{(x - 3) (x + 2)})$ by moving $\frac{1}{2}$ inside the logarithm.

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

Step 1.7

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 1.7.1

Apply the product rule to $\frac{x^{4}}{(x - 3) (x + 2)}$ .

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

Step 1.7.2

Apply the product rule to $(x - 3) (x + 2)$ .

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

Step 1.8

Multiply the exponents in ${(x^{4})}^{\frac{1}{2}}$ .

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Step 1.8.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

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

Step 1.8.2

Cancel the common factor of $2$ .

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Step 1.8.2.1

Factor $2$ out of $4$ .

$\log (x - 1) + \log (\frac{x^{2 (2) \frac{1}{2}}}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}})$

Step 1.8.2.2

Cancel the common factor.

$\log (x - 1) + \log (\frac{x^{2 \cdot 2 \frac{1}{2}}}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}})$

Step 1.8.2.3

Rewrite the expression.

$\log (x - 1) + \log (\frac{x^{2}}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}})$

Step 2

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

$\log ((x - 1) \frac{x^{2}}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}})$

Step 3

Multiply $x - 1$ by $\frac{x^{2}}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}}$ .

$\log (\frac{(x - 1) x^{2}}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}})$

Step 4

Reorder factors in $\log (\frac{(x - 1) x^{2}}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}})$ .

$\log (\frac{x^{2} (x - 1)}{{(x - 3)}^{\frac{1}{2}} {(x + 2)}^{\frac{1}{2}}})$