Algebra Examples

\sqrt{81 x^{4}}

$\sqrt{81 x^{4}}$

Step 1

Rewrite

81 x^{4}

$81 x^{4}$ as

{(9 x^{2})}^{2}

${(9 x^{2})}^{2}$ .

\sqrt{{(9 x^{2})}^{2}}

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

Step 2

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

9 x^{2}

$9 x^{2}$