## Intermediate Algebra (6th Edition)

$a^{3}$
$a^{8}=a^{3}\times a^{5}$ $a^{5}=a^{3}\times a^{2}$ $a^{3}$ When all monomials are in terms of $a$ and there are no other variables involved, the GCF is the monomial with the lowest exponent because the other monomials can be divided by it.