Algebra Examples

$\sqrt[3]{\frac{2}{9}}$

Step 1

Rewrite $\sqrt[3]{\frac{2}{9}}$ as $\frac{\sqrt[3]{2}}{\sqrt[3]{9}}$ .

$\frac{\sqrt[3]{2}}{\sqrt[3]{9}}$

Step 2

Multiply $\frac{\sqrt[3]{2}}{\sqrt[3]{9}}$ by $\frac{{\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{2}}$ .

$\frac{\sqrt[3]{2}}{\sqrt[3]{9}} \cdot \frac{{\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{2}}$

Step 3

Combine and simplify the denominator.

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Step 3.1

Multiply $\frac{\sqrt[3]{2}}{\sqrt[3]{9}}$ by $\frac{{\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{2}}$ .

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{\sqrt[3]{9} {\sqrt[3]{9}}^{2}}$

Step 3.2

Raise $\sqrt[3]{9}$ to the power of $1$ .

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{1} {\sqrt[3]{9}}^{2}}$

Step 3.3

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

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{1 + 2}}$

Step 3.4

Add $1$ and $2$ .

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{3}}$

Step 3.5

Rewrite ${\sqrt[3]{9}}^{3}$ as $9$ .

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Step 3.5.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{9}$ as $9^{\frac{1}{3}}$ .

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{{(9^{\frac{1}{3}})}^{3}}$

Step 3.5.2

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

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{9^{\frac{1}{3} \cdot 3}}$

Step 3.5.3

Combine $\frac{1}{3}$ and $3$ .

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{9^{\frac{3}{3}}}$

Step 3.5.4

Cancel the common factor of $3$ .

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Step 3.5.4.1

Cancel the common factor.

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{9^{\frac{3}{3}}}$

Step 3.5.4.2

Rewrite the expression.

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{9^{1}}$

Step 3.5.5

Evaluate the exponent.

$\frac{\sqrt[3]{2} {\sqrt[3]{9}}^{2}}{9}$

Step 4

Simplify the numerator.

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Step 4.1

Rewrite ${\sqrt[3]{9}}^{2}$ as $\sqrt[3]{9^{2}}$ .

$\frac{\sqrt[3]{2} \sqrt[3]{9^{2}}}{9}$

Step 4.2

Raise $9$ to the power of $2$ .

$\frac{\sqrt[3]{2} \sqrt[3]{81}}{9}$

Step 4.3

Rewrite $81$ as $3^{3} \cdot 3$ .

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Step 4.3.1

Factor $27$ out of $81$ .

$\frac{\sqrt[3]{2} \sqrt[3]{27 (3)}}{9}$

Step 4.3.2

Rewrite $27$ as $3^{3}$ .

$\frac{\sqrt[3]{2} \sqrt[3]{3^{3} \cdot 3}}{9}$

Step 4.4

Pull terms out from under the radical.

$\frac{\sqrt[3]{2} \cdot 3 \sqrt[3]{3}}{9}$

Step 4.5

Combine exponents.

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Step 4.5.1

Combine using the product rule for radicals.

$\frac{3 \sqrt[3]{2 \cdot 3}}{9}$

Step 4.5.2

Multiply $2$ by $3$ .

$\frac{3 \sqrt[3]{6}}{9}$

Step 5

Cancel the common factor of $3$ and $9$ .

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Step 5.1

Factor $3$ out of $3 \sqrt[3]{6}$ .

$\frac{3 (\sqrt[3]{6})}{9}$

Step 5.2

Cancel the common factors.

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Step 5.2.1

Factor $3$ out of $9$ .

$\frac{3 \sqrt[3]{6}}{3 \cdot 3}$

Step 5.2.2

Cancel the common factor.

$\frac{3 \sqrt[3]{6}}{3 \cdot 3}$

Step 5.2.3

Rewrite the expression.

$\frac{\sqrt[3]{6}}{3}$

Step 6

The result can be shown in multiple forms.

Exact Form:

$\frac{\sqrt[3]{6}}{3}$

Decimal Form:

$0.60570686 \dots$