Basic Math Examples

${(\sqrt{8})}^{2}$

Step 1

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

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Step 1.1

Factor $4$ out of $8$ .

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

Step 1.2

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

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

Step 2

Pull terms out from under the radical.

${(2 \sqrt{2})}^{2}$

Step 3

Simplify the expression.

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Step 3.1

Apply the product rule to $2 \sqrt{2}$ .

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

Step 3.2

Raise $2$ to the power of $2$ .

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

Step 4

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

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Step 4.1

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

$4 {(2^{\frac{1}{2}})}^{2}$

Step 4.2

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

$4 \cdot 2^{\frac{1}{2} \cdot 2}$

Step 4.3

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

$4 \cdot 2^{\frac{2}{2}}$

Step 4.4

Cancel the common factor of $2$ .

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Step 4.4.1

Cancel the common factor.

$4 \cdot 2^{\frac{2}{2}}$

Step 4.4.2

Rewrite the expression.

$4 \cdot 2^{1}$

Step 4.5

Evaluate the exponent.

$4 \cdot 2$

Step 5

Multiply $4$ by $2$ .

$8$