Trigonometry Examples

$g (- 2) = 3 x^{2} - 5 x + 1$

Step 1

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

$g (- 2) = 3 {(- 2)}^{2} - 5 \cdot - 2 + 1$

Step 2

Simplify the result.

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Step 2.1

Simplify each term.

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Step 2.1.1

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

$g (- 2) = 3 \cdot 4 - 5 \cdot - 2 + 1$

Step 2.1.2

Multiply $3$ by $4$ .

$g (- 2) = 12 - 5 \cdot - 2 + 1$

Step 2.1.3

Multiply $- 5$ by $- 2$ .

$g (- 2) = 12 + 10 + 1$

Step 2.2

Simplify by adding numbers.

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Step 2.2.1

Add $12$ and $10$ .

$g (- 2) = 22 + 1$

Step 2.2.2

Add $22$ and $1$ .

$g (- 2) = 23$

Step 2.3

The final answer is $23$ .

$23$

Step 3