Algebra Examples

$\frac{18 - 6 \sqrt[3]{3}}{\sqrt[3]{9}}$

Step 1

Multiply $\frac{18 - 6 \sqrt[3]{3}}{\sqrt[3]{9}}$ by $\frac{{\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{2}}$ .

$\frac{18 - 6 \sqrt[3]{3}}{\sqrt[3]{9}} \cdot \frac{{\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{2}}$

Step 2

Simplify terms.

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Step 2.1

Combine and simplify the denominator.

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Step 2.1.1

Multiply $\frac{18 - 6 \sqrt[3]{3}}{\sqrt[3]{9}}$ by $\frac{{\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{2}}$ .

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{\sqrt[3]{9} {\sqrt[3]{9}}^{2}}$

Step 2.1.2

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

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{1} {\sqrt[3]{9}}^{2}}$

Step 2.1.3

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

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{1 + 2}}$

Step 2.1.4

Add $1$ and $2$ .

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{{\sqrt[3]{9}}^{3}}$

Step 2.1.5

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

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Step 2.1.5.1

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

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{{(9^{\frac{1}{3}})}^{3}}$

Step 2.1.5.2

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

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{9^{\frac{1}{3} \cdot 3}}$

Step 2.1.5.3

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

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{9^{\frac{3}{3}}}$

Step 2.1.5.4

Cancel the common factor of $3$ .

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Step 2.1.5.4.1

Cancel the common factor.

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{9^{\frac{3}{3}}}$

Step 2.1.5.4.2

Rewrite the expression.

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{9^{1}}$

Step 2.1.5.5

Evaluate the exponent.

$\frac{(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{9}$

Step 2.2

Cancel the common factor of $18 - 6 \sqrt[3]{3}$ and $9$ .

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Step 2.2.1

Factor $3$ out of $(18 - 6 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}$ .

$\frac{3 ((6 - 2 \sqrt[3]{3}) {\sqrt[3]{9}}^{2})}{9}$

Step 2.2.2

Cancel the common factors.

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Step 2.2.2.1

Factor $3$ out of $9$ .

$\frac{3 ((6 - 2 \sqrt[3]{3}) {\sqrt[3]{9}}^{2})}{3 (3)}$

Step 2.2.2.2

Cancel the common factor.

$\frac{3 ((6 - 2 \sqrt[3]{3}) {\sqrt[3]{9}}^{2})}{3 \cdot 3}$

Step 2.2.2.3

Rewrite the expression.

$\frac{(6 - 2 \sqrt[3]{3}) {\sqrt[3]{9}}^{2}}{3}$

Step 3

Simplify the numerator.

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Step 3.1

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

$\frac{(6 - 2 \sqrt[3]{3}) \sqrt[3]{9^{2}}}{3}$

Step 3.2

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

$\frac{(6 - 2 \sqrt[3]{3}) \sqrt[3]{81}}{3}$

Step 3.3

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

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Step 3.3.1

Factor $27$ out of $81$ .

$\frac{(6 - 2 \sqrt[3]{3}) \sqrt[3]{27 (3)}}{3}$

Step 3.3.2

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

$\frac{(6 - 2 \sqrt[3]{3}) \sqrt[3]{3^{3} \cdot 3}}{3}$

Step 3.4

Pull terms out from under the radical.

$\frac{(6 - 2 \sqrt[3]{3}) \cdot 3 \sqrt[3]{3}}{3}$

Step 4

Simplify terms.

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Step 4.1

Cancel the common factor of $3$ .

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Step 4.1.1

Cancel the common factor.

$\frac{(6 - 2 \sqrt[3]{3}) \cdot 3 \sqrt[3]{3}}{3}$

Step 4.1.2

Divide $(6 - 2 \sqrt[3]{3}) \sqrt[3]{3}$ by $1$ .

$(6 - 2 \sqrt[3]{3}) \sqrt[3]{3}$

Step 4.2

Apply the distributive property.

$6 \sqrt[3]{3} - 2 \sqrt[3]{3} \sqrt[3]{3}$

Step 5

Multiply $- 2 \sqrt[3]{3} \sqrt[3]{3}$ .

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Step 5.1

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

$6 \sqrt[3]{3} - 2 ({\sqrt[3]{3}}^{1} \sqrt[3]{3})$

Step 5.2

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

$6 \sqrt[3]{3} - 2 ({\sqrt[3]{3}}^{1} {\sqrt[3]{3}}^{1})$

Step 5.3

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

$6 \sqrt[3]{3} - 2 {\sqrt[3]{3}}^{1 + 1}$

Step 5.4

Add $1$ and $1$ .

$6 \sqrt[3]{3} - 2 {\sqrt[3]{3}}^{2}$

Step 6

Simplify each term.

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Step 6.1

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

$6 \sqrt[3]{3} - 2 \sqrt[3]{3^{2}}$

Step 6.2

Raise $3$ to the power of $2$ .

$6 \sqrt[3]{3} - 2 \sqrt[3]{9}$

Step 7

The result can be shown in multiple forms.

Exact Form:

$6 \sqrt[3]{3} - 2 \sqrt[3]{9}$

Decimal Form:

$4.49332977 \dots$