Simplify fourth root of 81x^12

$\sqrt[4]{81 x^{12}}$

Step 1

Rewrite $81 x^{12}$ as ${(3 x^{3})}^{4}$ .

$\sqrt[4]{{(3 x^{3})}^{4}}$

Step 2

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

$3 x^{3}$

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