Factor s^2+8s+16

$s^{2} + 8 s + 16$

Step 1

Rewrite $16$ as $4^{2}$ .

$s^{2} + 8 s + 4^{2}$

Step 2

Check that the middle term is two times the product of the numbers being squared in the first term and third term.

$8 s = 2 \cdot s \cdot 4$

Step 3

Rewrite the polynomial.

$s^{2} + 2 \cdot s \cdot 4 + 4^{2}$

Step 4

Factor using the perfect square trinomial rule $a^{2} + 2 a b + b^{2} = {(a + b)}^{2}$ , where $a = s$ and $b = 4$ .

${(s + 4)}^{2}$