Algebra Examples

$x^{2} - 6 x - 9$

Step 1

To find the $c$ value $c = {(\frac{b}{2})}^{2}$ , divide the coefficient of $x$ by $2$ and square the result.

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Step 1.1

Divide $6$ by $2$ .

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

Step 1.2

Multiply $- 1$ by $3$ .

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

Step 1.3

Raise $- 3$ to the power of $2$ .

$9$

Step 2

Combine the opposite terms in $x^{2} - 6 x - 9 + 9$ .

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Step 2.1

Add $- 9$ and $9$ .

$x^{2} - 6 x + 0$

Step 2.2

Add $x^{2} - 6 x$ and $0$ .

$x^{2} - 6 x$