Algebra Examples

$\sqrt{8} + \sqrt{2}$

Step 1

Simplify each term.

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Step 1.1

Rewrite $8$ as $2^{2} \cdot 2$ .

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Step 1.1.1

Factor $4$ out of $8$ .

$\sqrt{4 (2)} + \sqrt{2}$

Step 1.1.2

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

$\sqrt{2^{2} \cdot 2} + \sqrt{2}$

Step 1.2

Pull terms out from under the radical.

$| 2 | \sqrt{2} + \sqrt{2}$

Step 1.3

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

$2 \sqrt{2} + \sqrt{2}$

Step 2

Add $2 \sqrt{2}$ and $\sqrt{2}$ .

$3 \sqrt{2}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$3 \sqrt{2}$

Decimal Form:

$4.24264068 \dots$