Simplify square root of x^2*4

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

Step 1

Rewrite $x^{2} \cdot 4$ as ${(x \cdot 2)}^{2}$ .

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

Step 2

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

$x \cdot 2$

Step 3

Move $2$ to the left of $x$ .

$2 x$

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