Precalculus Examples

$h (x) = - 9 - x$ , $h (2 k - 5)$

Step 1

Replace the variable $x$ with $2 k - 5$ in the expression.

$h (2 k - 5) = - 9 - (2 k - 5)$

Step 2

Simplify $- 9 - (2 k - 5)$ .

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Step 2.1

Remove parentheses.

$- 9 - (2 k - 5)$

Step 2.2

Simplify each term.

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Step 2.2.1

Apply the distributive property.

$- 9 - (2 k) - - 5$

Step 2.2.2

Multiply $2$ by $- 1$ .

$- 9 - 2 k - - 5$

Step 2.2.3

Multiply $- 1$ by $- 5$ .

$- 9 - 2 k + 5$

Step 2.3

Add $- 9$ and $5$ .

$- 2 k - 4$