Algebra Examples

$4 \sqrt{81}$

Step 1

Rewrite $81$ as $9^{2}$ .

$4 \sqrt{9^{2}}$

Step 2

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

$4 \cdot 9$

Step 3

Multiply $4$ by $9$ .

$36$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$