Evaluate 2 square root of 4

$2 \sqrt{4}$

Step 1

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

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

Step 2

Pull terms out from under the radical, assuming positive real numbers.

$2 \cdot 2$

Step 3

Multiply $2$ by $2$ .

$4$

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