#### Answer

Tom should factor the numerator instead of splitting them into smaller components.
$= x+2$

#### Work Step by Step

$\frac{x^{2}+6x+8}{x+4}$
$= \frac{(x+4)(x+2)}{x+4}$
$= \frac{(x+2)}{1}$
$= x+2$
Tom should factor the numerator instead of splitting them into smaller components.