Algebra Examples

$f (- 9) = 2 (- 9) - 9$

Step 1

Multiply $2$ by $- 9$ .

$f (- 9) = - 18 - 9$

Step 2

Subtract $9$ from $- 18$ .

$f (- 9) = - 27$

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