Finite Math Examples

$f (- 1) = 2 x^{2} - 3 x$

Step 1

Replace the variable $x$ with $- 1$ in the expression.

$f (- 1) = 2 {(- 1)}^{2} - 3 \cdot - 1$

Step 2

Simplify the result.

Tap for more steps...

Step 2.1

Simplify each term.

Tap for more steps...

Step 2.1.1

Raise $- 1$ to the power of $2$ .

$f (- 1) = 2 \cdot 1 - 3 \cdot - 1$

Step 2.1.2

Multiply $2$ by $1$ .

$f (- 1) = 2 - 3 \cdot - 1$

Step 2.1.3

Multiply $- 3$ by $- 1$ .

$f (- 1) = 2 + 3$

Step 2.2

Add $2$ and $3$ .

$f (- 1) = 5$

Step 2.3

The final answer is $5$ .

$5$

Step 3