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

$2z^{2}$ , $3$
$2z^{3}+6z^{2}+3z+9$ ...the first two terms: $2z^{3}=(2)\cdot(z\cdot z)\cdot z$ $6z^{2}=(2)\cdot(z\cdot z)$ GCF: $2z^{2}$ ...the last two terms: $3z=(3)\cdot z$ $9=(3)\cdot 3$ GCF: $3$