factor the expression. $x^2 + 16x + 63$ $x^2 + 16x + 63 = \\square$

$factor the expression. $x^2 + 16x + 63$ $x^2 + 16x + 63 = \\square$$

factor the expression.
$x^2 + 16x + 63$
$x^2 + 16x + 63 = \square$

Identify two numbers: $7$ and $9$, since $7+9=16$ and $7\times9=63$.

Express the quadratic as a product of two binomials.

$(x+7)(x+9)$