Algebra Examples

$\frac{\sqrt{75 x^{5} y}}{\sqrt{28 x y^{3}}}$

Step 1

Combine $\sqrt{75 x^{5} y}$ and $\sqrt{28 x y^{3}}$ into a single radical.

$\sqrt{\frac{75 x^{5} y}{28 x y^{3}}}$

Step 2

Reduce the expression $\frac{75 x^{5} y}{28 x y^{3}}$ by cancelling the common factors.

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Step 2.1

Factor $x$ out of $75 x^{5} y$ .

$\sqrt{\frac{x (75 x^{4} y)}{28 x y^{3}}}$

Step 2.2

Factor $x$ out of $28 x y^{3}$ .

$\sqrt{\frac{x (75 x^{4} y)}{x (28 y^{3})}}$

Step 2.3

Cancel the common factor.

$\sqrt{\frac{x (75 x^{4} y)}{x (28 y^{3})}}$

Step 2.4

Rewrite the expression.

$\sqrt{\frac{75 x^{4} y}{28 y^{3}}}$

Step 3

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

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Step 3.1

Factor $y$ out of $75 x^{4} y$ .

$\sqrt{\frac{y (75 x^{4})}{28 y^{3}}}$

Step 3.2

Cancel the common factors.

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Step 3.2.1

Factor $y$ out of $28 y^{3}$ .

$\sqrt{\frac{y (75 x^{4})}{y (28 y^{2})}}$

Step 3.2.2

Cancel the common factor.

$\sqrt{\frac{y (75 x^{4})}{y (28 y^{2})}}$

Step 3.2.3

Rewrite the expression.

$\sqrt{\frac{75 x^{4}}{28 y^{2}}}$

Step 4

Rewrite $\frac{75 x^{4}}{28 y^{2}}$ as ${(\frac{5 x^{2}}{2 y})}^{2} \frac{3}{7}$ .

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Step 4.1

Factor the perfect power ${(5 x^{2})}^{2}$ out of $75 x^{4}$ .

$\sqrt{\frac{{(5 x^{2})}^{2} \cdot 3}{28 y^{2}}}$

Step 4.2

Factor the perfect power ${(2 y)}^{2}$ out of $28 y^{2}$ .

$\sqrt{\frac{{(5 x^{2})}^{2} \cdot 3}{{(2 y)}^{2} \cdot 7}}$

Step 4.3

Rearrange the fraction $\frac{{(5 x^{2})}^{2} \cdot 3}{{(2 y)}^{2} \cdot 7}$ .

$\sqrt{{(\frac{5 x^{2}}{2 y})}^{2} \frac{3}{7}}$

Step 5

Pull terms out from under the radical.

$\frac{5 x^{2}}{2 y} \sqrt{\frac{3}{7}}$

Step 6

Rewrite $\sqrt{\frac{3}{7}}$ as $\frac{\sqrt{3}}{\sqrt{7}}$ .

$\frac{5 x^{2}}{2 y} \cdot \frac{\sqrt{3}}{\sqrt{7}}$

Step 7

Combine.

$\frac{5 x^{2} \sqrt{3}}{2 y \sqrt{7}}$

Step 8

Multiply $\frac{5 x^{2} \sqrt{3}}{2 y \sqrt{7}}$ by $\frac{\sqrt{7}}{\sqrt{7}}$ .

$\frac{5 x^{2} \sqrt{3}}{2 y \sqrt{7}} \cdot \frac{\sqrt{7}}{\sqrt{7}}$

Step 9

Combine and simplify the denominator.

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Step 9.1

Multiply $\frac{5 x^{2} \sqrt{3}}{2 y \sqrt{7}}$ by $\frac{\sqrt{7}}{\sqrt{7}}$ .

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y \sqrt{7} \sqrt{7}}$

Step 9.2

Move $\sqrt{7}$ .

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y (\sqrt{7} \sqrt{7})}$

Step 9.3

Raise $\sqrt{7}$ to the power of $1$ .

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y ({\sqrt{7}}^{1} \sqrt{7})}$

Step 9.4

Raise $\sqrt{7}$ to the power of $1$ .

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y ({\sqrt{7}}^{1} {\sqrt{7}}^{1})}$

Step 9.5

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

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y {\sqrt{7}}^{1 + 1}}$

Step 9.6

Add $1$ and $1$ .

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y {\sqrt{7}}^{2}}$

Step 9.7

Rewrite ${\sqrt{7}}^{2}$ as $7$ .

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Step 9.7.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{7}$ as $7^{\frac{1}{2}}$ .

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y {(7^{\frac{1}{2}})}^{2}}$

Step 9.7.2

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

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y \cdot 7^{\frac{1}{2} \cdot 2}}$

Step 9.7.3

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

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y \cdot 7^{\frac{2}{2}}}$

Step 9.7.4

Cancel the common factor of $2$ .

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Step 9.7.4.1

Cancel the common factor.

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y \cdot 7^{\frac{2}{2}}}$

Step 9.7.4.2

Rewrite the expression.

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y \cdot 7^{1}}$

Step 9.7.5

Evaluate the exponent.

$\frac{5 x^{2} \sqrt{3} \sqrt{7}}{2 y \cdot 7}$

Step 10

Simplify the numerator.

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Step 10.1

Combine using the product rule for radicals.

$\frac{5 x^{2} \sqrt{7 \cdot 3}}{2 y \cdot 7}$

Step 10.2

Multiply $7$ by $3$ .

$\frac{5 x^{2} \sqrt{21}}{2 y \cdot 7}$

Step 11

Multiply $7$ by $2$ .

$\frac{5 x^{2} \sqrt{21}}{14 y}$