Algebra Examples

$f (- 1) = 2 (- 1) - 1$

Step 1

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

$f (- 1) = 2 (- 1) (- 1)$

Step 2

Simplify the result.

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Step 2.1

Multiply $2 (- 1) (- 1)$ .

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Step 2.1.1

Multiply $2$ by $- 1$ .

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

Step 2.1.2

Multiply $- 2$ by $- 1$ .

$f (- 1) = 2$

Step 2.2

The final answer is $2$ .

$2$

Step 3