Algebra Examples

$f (- 8) = \sqrt{- 8 + 8}$

Step 1

Add $- 8$ and $8$ .

$f (- 8) = \sqrt{0}$

Step 2

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

$f (- 8) = \sqrt{0^{2}}$

Step 3

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

$f (- 8) = 0$