Find the Perfect Square Trinomial r^2+10r

$r^{2} + 10 r$

Step 1

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

Divide $10$ by $2$ .

$5^{2}$

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

$25$

Step 2

Add $25$ to get the perfect square trinomial.

$r^{2} + 10 r + 25$