Algebra Examples

$\frac{4 x^{3}}{\sqrt{7 x + 11}}$

Step 1

Multiply $\frac{4 x^{3}}{\sqrt{7 x + 11}}$ by $\frac{\sqrt{7 x + 11}}{\sqrt{7 x + 11}}$ .

$\frac{4 x^{3}}{\sqrt{7 x + 11}} \cdot \frac{\sqrt{7 x + 11}}{\sqrt{7 x + 11}}$

Step 2

Combine and simplify the denominator.

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Step 2.1

Multiply $\frac{4 x^{3}}{\sqrt{7 x + 11}}$ by $\frac{\sqrt{7 x + 11}}{\sqrt{7 x + 11}}$ .

$\frac{4 x^{3} \sqrt{7 x + 11}}{\sqrt{7 x + 11} \sqrt{7 x + 11}}$

Step 2.2

Raise $\sqrt{7 x + 11}$ to the power of $1$ .

$\frac{4 x^{3} \sqrt{7 x + 11}}{{\sqrt{7 x + 11}}^{1} \sqrt{7 x + 11}}$

Step 2.3

Raise $\sqrt{7 x + 11}$ to the power of $1$ .

$\frac{4 x^{3} \sqrt{7 x + 11}}{{\sqrt{7 x + 11}}^{1} {\sqrt{7 x + 11}}^{1}}$

Step 2.4

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

$\frac{4 x^{3} \sqrt{7 x + 11}}{{\sqrt{7 x + 11}}^{1 + 1}}$

Step 2.5

Add $1$ and $1$ .

$\frac{4 x^{3} \sqrt{7 x + 11}}{{\sqrt{7 x + 11}}^{2}}$

Step 2.6

Rewrite ${\sqrt{7 x + 11}}^{2}$ as $7 x + 11$ .

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Step 2.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{7 x + 11}$ as ${(7 x + 11)}^{\frac{1}{2}}$ .

$\frac{4 x^{3} \sqrt{7 x + 11}}{{({(7 x + 11)}^{\frac{1}{2}})}^{2}}$

Step 2.6.2

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

$\frac{4 x^{3} \sqrt{7 x + 11}}{{(7 x + 11)}^{\frac{1}{2} \cdot 2}}$

Step 2.6.3

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

$\frac{4 x^{3} \sqrt{7 x + 11}}{{(7 x + 11)}^{\frac{2}{2}}}$

Step 2.6.4

Cancel the common factor of $2$ .

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Step 2.6.4.1

Cancel the common factor.

$\frac{4 x^{3} \sqrt{7 x + 11}}{{(7 x + 11)}^{\frac{2}{2}}}$

Step 2.6.4.2

Rewrite the expression.

$\frac{4 x^{3} \sqrt{7 x + 11}}{{(7 x + 11)}^{1}}$

Step 2.6.5

Simplify.

$\frac{4 x^{3} \sqrt{7 x + 11}}{7 x + 11}$