Algebra Examples

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

Step 1

Simplify the numerator.

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Step 1.1

To write $\frac{{(3 x - 1)}^{\frac{1}{3}}}{{(3 x + 1)}^{\frac{2}{3}}}$ as a fraction with a common denominator, multiply by $\frac{{(3 x - 1)}^{\frac{2}{3}}}{{(3 x - 1)}^{\frac{2}{3}}}$ .

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

Step 1.2

To write $- \frac{{(3 x + 1)}^{\frac{1}{3}}}{{(3 x - 1)}^{\frac{2}{3}}}$ as a fraction with a common denominator, multiply by $\frac{{(3 x + 1)}^{\frac{2}{3}}}{{(3 x + 1)}^{\frac{2}{3}}}$ .

Step 1.3

Write each expression with a common denominator of ${(3 x + 1)}^{\frac{2}{3}} {(3 x - 1)}^{\frac{2}{3}}$ , by multiplying each by an appropriate factor of $1$ .

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Step 1.3.1

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

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

Step 1.3.2

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

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

Step 1.3.3

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

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

Step 1.4

Combine the numerators over the common denominator.

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

Step 1.5

Rewrite $\frac{{(3 x - 1)}^{\frac{1}{3}} {(3 x - 1)}^{\frac{2}{3}} - {(3 x + 1)}^{\frac{1}{3}} {(3 x + 1)}^{\frac{2}{3}}}{{(3 x + 1)}^{\frac{2}{3}} {(3 x - 1)}^{\frac{2}{3}}}$ in a factored form.

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Step 1.5.1

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

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Step 1.5.1.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

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

Step 1.5.1.2

Combine the numerators over the common denominator.

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

Step 1.5.1.3

Add $1$ and $2$ .

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

Step 1.5.1.4

Divide $3$ by $3$ .

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

Step 1.5.2

Simplify ${(3 x - 1)}^{1}$ .

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

Step 1.5.3

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

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Step 1.5.3.1

Move ${(3 x + 1)}^{\frac{2}{3}}$ .

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

Step 1.5.3.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

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

Step 1.5.3.3

Combine the numerators over the common denominator.

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

Step 1.5.3.4

Add $2$ and $1$ .

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

Step 1.5.3.5

Divide $3$ by $3$ .

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

Step 1.5.4

Simplify $- {(3 x + 1)}^{1}$ .

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

Step 1.5.5

Apply the distributive property.

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

Step 1.5.6

Multiply $3$ by $- 1$ .

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

Step 1.5.7

Multiply $- 1$ by $1$ .

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

Step 1.5.8

Subtract $3 x$ from $3 x$ .

$\frac{\frac{0 - 1 - 1}{{(3 x + 1)}^{\frac{2}{3}} {(3 x - 1)}^{\frac{2}{3}}}}{{(3 x - 1)}^{\frac{2}{3}}}$

Step 1.5.9

Subtract $1$ from $0$ .

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

Step 1.5.10

Subtract $1$ from $- 1$ .

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

Step 1.6

Move the negative in front of the fraction.

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

Step 2

Multiply the numerator by the reciprocal of the denominator.

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

Step 3

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

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Step 3.1

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

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

Step 3.2

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

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Step 3.2.1

Move ${(3 x - 1)}^{\frac{2}{3}}$ .

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

Step 3.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

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

Step 3.2.3

Combine the numerators over the common denominator.

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

Step 3.2.4

Add $2$ and $2$ .

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