Algebra 1: Common Core (15th Edition)

$5(g+1)(g+2)$
... factor out the GCF of all the terms, 5 $=5(g^{2}+3g+2)=$ ... to factor the trinomial, find factors of 2 whose sum is 3., .... 1 and 2 $=5(g+1)(g+2)$