Algebra Examples

$\sqrt[4]{64}$

Step 1

Rewrite $64$ as $2^{4} \cdot 4$ .

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Step 1.1

Factor $16$ out of $64$ .

$\sqrt[4]{16 (4)}$

Step 1.2

Rewrite $16$ as $2^{4}$ .

$\sqrt[4]{2^{4} \cdot 4}$

Step 2

Pull terms out from under the radical.

$| 2 | \sqrt[4]{4}$

Step 3

The absolute value is the distance between a number and zero. The distance between $0$ and $2$ is $2$ .

$2 \sqrt[4]{4}$

Step 4

Rewrite $4$ as $2^{2}$ .

$2 \sqrt[4]{2^{2}}$

Step 5

Rewrite $\sqrt[4]{2^{2}}$ as $\sqrt{\sqrt{2^{2}}}$ .

$2 \sqrt{\sqrt{2^{2}}}$

Step 6

Pull terms out from under the radical.

$2 \sqrt{| 2 |}$

Step 7

The absolute value is the distance between a number and zero. The distance between $0$ and $2$ is $2$ .

$2 \sqrt{2}$

Step 8

The result can be shown in multiple forms.

Exact Form:

$2 \sqrt{2}$

Decimal Form:

$2.82842712 \dots$