Algebra Examples

$f (- 9) = \sqrt{- 9 + 9} - 6$

Step 1

Simplify each term.

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Step 1.1

Add $- 9$ and $9$ .

$f (- 9) = \sqrt{0} - 6$

Step 1.2

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

$f (- 9) = \sqrt{0^{2}} - 6$

Step 1.3

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

$f (- 9) = 0 - 6$

Step 2

Subtract $6$ from $0$ .

$f (- 9) = - 6$