Algebra Examples

$x^{2} + 2 x - 1$

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 $2$ by $2$ .

$1^{2}$

Step 1.2

One to any power is one.

$1$

Step 2

Combine the opposite terms in $x^{2} + 2 x - 1 + 1$ .

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Step 2.1

Add $- 1$ and $1$ .

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

Step 2.2

Add $x^{2} + 2 x$ and $0$ .

$x^{2} + 2 x$