Algebra Examples

$3 (x - 4) + 2 x - x^{2}$ for $x = 5$

Step 1

Replace the variable $x$ with $5$ in the expression.

$3 ((5) - 4) + 2 (5) - {(5)}^{2}$

Step 2

Simplify each term.

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Step 2.1

Subtract $4$ from $5$ .

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

Step 2.2

Multiply $3$ by $1$ .

$3 + 2 (5) - {(5)}^{2}$

Step 2.3

Multiply $2$ by $5$ .

$3 + 10 - {(5)}^{2}$

Step 2.4

Raise $5$ to the power of $2$ .

$3 + 10 - 1 \cdot 25$

Step 2.5

Multiply $- 1$ by $25$ .

$3 + 10 - 25$

Step 3

Simplify by adding and subtracting.

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Step 3.1

Add $3$ and $10$ .

$13 - 25$

Step 3.2

Subtract $25$ from $13$ .

$- 12$