Precalculus Examples

$\sqrt{- 1 + 1}$

Step 1

Add $- 1$ and $1$ .

$\sqrt{0}$

Step 2

Rewrite $0$ as $0^{2}$ .

$\sqrt{0^{2}}$

Step 3

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

$0$

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