## Intermediate Algebra (6th Edition)

$4a(2a^{2}-1)$
We are given the polynomial $8a^{3}-4a$. The GCF of both terms is$4a$, so we can factor $4a$ out from each term. $4a(2a^{2})+4a(-1)$ Next, we can apply the distributive property. $4a(2a^{2}-1)$