# How do you factor the expression x^2+12x+27?

$\left(x + 3\right) \left(x + 9\right)$
${x}^{2} + 12 x + 27 = \left(x + 3\right) \left(x + 9\right)$
(The sum of $3$ and $9$ is $12$, while their product is $27$)