## Algebra 1: Common Core (15th Edition)

$224=(14)(16)$
$224=$ ...write $224$ as a difference of two squares. $=225-1$ ...write each term as a square. $=15^{2}-1^{2}$ ...use the rule for the difference of two squares. $=(15-1)(15+1)$ ...simplify. $=(14)(16)$