Simplify square root of 81x^18y^6

$\sqrt{81 x^{18} y^{6}}$

Step 1

Rewrite $81 x^{18} y^{6}$ as ${(9 x^{9} y^{3})}^{2}$ .

$\sqrt{{(9 x^{9} y^{3})}^{2}}$

Step 2

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

$9 x^{9} y^{3}$

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