Simplify ( square root of 5)/(6+ square root of 5)

$\frac{\sqrt{5}}{6 + \sqrt{5}}$

Step 1

Multiply $\frac{\sqrt{5}}{6 + \sqrt{5}}$ by $\frac{6 - \sqrt{5}}{6 - \sqrt{5}}$ .

$\frac{\sqrt{5}}{6 + \sqrt{5}} \cdot \frac{6 - \sqrt{5}}{6 - \sqrt{5}}$

Step 2

Multiply $\frac{\sqrt{5}}{6 + \sqrt{5}}$ by $\frac{6 - \sqrt{5}}{6 - \sqrt{5}}$ .

$\frac{\sqrt{5} (6 - \sqrt{5})}{(6 + \sqrt{5}) (6 - \sqrt{5})}$

Step 3

Expand the denominator using the FOIL method.

$\frac{\sqrt{5} (6 - \sqrt{5})}{36 - 6 \sqrt{5} + \sqrt{5} \cdot 6 - {\sqrt{5}}^{2}}$

Step 4

Simplify.

$\frac{\sqrt{5} (6 - \sqrt{5})}{31}$

Step 5

Apply the distributive property.

$\frac{\sqrt{5} \cdot 6 + \sqrt{5} (- \sqrt{5})}{31}$

Step 6

Move $6$ to the left of $\sqrt{5}$ .

$\frac{6 \cdot \sqrt{5} + \sqrt{5} (- \sqrt{5})}{31}$

Step 7

Multiply $\sqrt{5} (- \sqrt{5})$ .

Raise $\sqrt{5}$ to the power of $1$ .

$\frac{6 \cdot \sqrt{5} - ({\sqrt{5}}^{1} \sqrt{5})}{31}$

Raise $\sqrt{5}$ to the power of $1$ .

$\frac{6 \cdot \sqrt{5} - ({\sqrt{5}}^{1} {\sqrt{5}}^{1})}{31}$

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

$\frac{6 \cdot \sqrt{5} - {\sqrt{5}}^{1 + 1}}{31}$

Add $1$ and $1$ .

$\frac{6 \cdot \sqrt{5} - {\sqrt{5}}^{2}}{31}$

Step 8

Simplify each term.

Rewrite ${\sqrt{5}}^{2}$ as $5$ .

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{5}$ as $5^{\frac{1}{2}}$ .

$\frac{6 \sqrt{5} - {(5^{\frac{1}{2}})}^{2}}{31}$

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

$\frac{6 \sqrt{5} - 5^{\frac{1}{2} \cdot 2}}{31}$

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

$\frac{6 \sqrt{5} - 5^{\frac{2}{2}}}{31}$

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{6 \sqrt{5} - 5^{\frac{2}{2}}}{31}$

Rewrite the expression.

$\frac{6 \sqrt{5} - 5^{1}}{31}$

Evaluate the exponent.

$\frac{6 \sqrt{5} - 1 \cdot 5}{31}$

Multiply $- 1$ by $5$ .

$\frac{6 \sqrt{5} - 5}{31}$

Step 9

The result can be shown in multiple forms.

Exact Form:

$\frac{6 \sqrt{5} - 5}{31}$

Decimal Form:

$0.27149702 \dots$

Simplify ( square root of 5)/(6+ square root of 5)

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