Pre-Algebra Examples

$\sqrt{- x^{2}}$

Step 1

Reorder $- 1$ and $x^{2}$ .

$\sqrt{x^{2} \cdot - 1}$

Step 2

Pull terms out from under the radical.

$x \sqrt{- 1}$

Step 3

Rewrite $\sqrt{- 1}$ as $i$ .

$x i$

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