Find the Perfect Square Trinomial r^2+16r

$r^{2} + 16 r$

Step 1

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

Divide $16$ by $2$ .

$8^{2}$

Raise $8$ to the power of $2$ .

$64$

Step 2

Add $64$ to get the perfect square trinomial.

$r^{2} + 16 r + 64$