Algebra Examples

$x^{2} - 26 x$

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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Divide $26$ by $2$ .

${(- 1 \cdot 13)}^{2}$

Multiply $- 1$ by $13$ .

${(- 13)}^{2}$

Raise $- 13$ to the power of $2$ .

$169$

Add $169$ to get the perfect square trinomial.

$x^{2} - 26 x + 169$