Simplify 4 square root of 16

$4 \sqrt{16}$

Step 1

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

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

Step 2

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

$4 \cdot 4$

Step 3

Multiply $4$ by $4$ .

$16$

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