Simplify square root of (x^2-4)+4

$\sqrt{(x^{2} - 4) + 4}$

Step 1

Add $- 4$ and $4$ .

$\sqrt{x^{2} + 0}$

Step 2

Add $x^{2}$ and $0$ .

$\sqrt{x^{2}}$

Step 3

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

$x$

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