Algebra Examples

$\sqrt{\frac{18 y}{36 y^{3}}}$

Step 1

Reduce the expression $\frac{18 y}{36 y^{3}}$ by cancelling the common factors.

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Step 1.1

Factor $18$ out of $18 y$ .

$\sqrt{\frac{18 (y)}{36 y^{3}}}$

Step 1.2

Factor $18$ out of $36 y^{3}$ .

$\sqrt{\frac{18 (y)}{18 (2 y^{3})}}$

Step 1.3

Cancel the common factor.

$\sqrt{\frac{18 y}{18 (2 y^{3})}}$

Step 1.4

Rewrite the expression.

$\sqrt{\frac{y}{2 y^{3}}}$

Step 2

Cancel the common factor of $y$ and $y^{3}$ .

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Step 2.1

Raise $y$ to the power of $1$ .

$\sqrt{\frac{y^{1}}{2 y^{3}}}$

Step 2.2

Factor $y$ out of $y^{1}$ .

$\sqrt{\frac{y \cdot 1}{2 y^{3}}}$

Step 2.3

Cancel the common factors.

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Step 2.3.1

Factor $y$ out of $2 y^{3}$ .

$\sqrt{\frac{y \cdot 1}{y (2 y^{2})}}$

Step 2.3.2

Cancel the common factor.

$\sqrt{\frac{y \cdot 1}{y (2 y^{2})}}$

Step 2.3.3

Rewrite the expression.

$\sqrt{\frac{1}{2 y^{2}}}$

Step 3

Rewrite $\frac{1}{2 y^{2}}$ as ${(\frac{1}{y})}^{2} \frac{1}{2}$ .

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Step 3.1

Factor the perfect power $1^{2}$ out of $1$ .

$\sqrt{\frac{1^{2} \cdot 1}{2 y^{2}}}$

Step 3.2

Factor the perfect power $y^{2}$ out of $2 y^{2}$ .

$\sqrt{\frac{1^{2} \cdot 1}{y^{2} \cdot 2}}$

Step 3.3

Rearrange the fraction $\frac{1^{2} \cdot 1}{y^{2} \cdot 2}$ .

$\sqrt{{(\frac{1}{y})}^{2} \frac{1}{2}}$

Step 4

Pull terms out from under the radical.

$\frac{1}{y} \sqrt{\frac{1}{2}}$

Step 5

Rewrite $\sqrt{\frac{1}{2}}$ as $\frac{\sqrt{1}}{\sqrt{2}}$ .

$\frac{1}{y} \cdot \frac{\sqrt{1}}{\sqrt{2}}$

Step 6

Any root of $1$ is $1$ .

$\frac{1}{y} \cdot \frac{1}{\sqrt{2}}$

Step 7

Multiply $\frac{1}{\sqrt{2}}$ by $\frac{\sqrt{2}}{\sqrt{2}}$ .

$\frac{1}{y} (\frac{1}{\sqrt{2}} \cdot \frac{\sqrt{2}}{\sqrt{2}})$

Step 8

Combine and simplify the denominator.

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Step 8.1

Multiply $\frac{1}{\sqrt{2}}$ by $\frac{\sqrt{2}}{\sqrt{2}}$ .

$\frac{1}{y} \cdot \frac{\sqrt{2}}{\sqrt{2} \sqrt{2}}$

Step 8.2

Raise $\sqrt{2}$ to the power of $1$ .

$\frac{1}{y} \cdot \frac{\sqrt{2}}{{\sqrt{2}}^{1} \sqrt{2}}$

Step 8.3

Raise $\sqrt{2}$ to the power of $1$ .

$\frac{1}{y} \cdot \frac{\sqrt{2}}{{\sqrt{2}}^{1} {\sqrt{2}}^{1}}$

Step 8.4

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

$\frac{1}{y} \cdot \frac{\sqrt{2}}{{\sqrt{2}}^{1 + 1}}$

Step 8.5

Add $1$ and $1$ .

$\frac{1}{y} \cdot \frac{\sqrt{2}}{{\sqrt{2}}^{2}}$

Step 8.6

Rewrite ${\sqrt{2}}^{2}$ as $2$ .

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Step 8.6.1

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

$\frac{1}{y} \cdot \frac{\sqrt{2}}{{(2^{\frac{1}{2}})}^{2}}$

Step 8.6.2

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

$\frac{1}{y} \cdot \frac{\sqrt{2}}{2^{\frac{1}{2} \cdot 2}}$

Step 8.6.3

Combine $\frac{1}{2}$ and $2$ .

$\frac{1}{y} \cdot \frac{\sqrt{2}}{2^{\frac{2}{2}}}$

Step 8.6.4

Cancel the common factor of $2$ .

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Step 8.6.4.1

Cancel the common factor.

$\frac{1}{y} \cdot \frac{\sqrt{2}}{2^{\frac{2}{2}}}$

Step 8.6.4.2

Rewrite the expression.

$\frac{1}{y} \cdot \frac{\sqrt{2}}{2^{1}}$

Step 8.6.5

Evaluate the exponent.

$\frac{1}{y} \cdot \frac{\sqrt{2}}{2}$

Step 9

Multiply $\frac{1}{y}$ by $\frac{\sqrt{2}}{2}$ .

$\frac{\sqrt{2}}{y \cdot 2}$

Step 10

Move $2$ to the left of $y$ .

$\frac{\sqrt{2}}{2 y}$