Simplify square root of 400x^4

$\sqrt{400 x^{4}}$

Step 1

Rewrite $400 x^{4}$ as ${(20 x^{2})}^{2}$ .

$\sqrt{{(20 x^{2})}^{2}}$

Step 2

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

$20 x^{2}$

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