$\"\"$

The expression is $\"\"$ .

Complete the factor.

$\"\"$ (Original expression)

$\"\"$ (Group to find a GCF)

$\"\"$ (Factor out the GCF)

$\"\"$ (Distributive property: $\"\"$ )

Since $\"\"$ and $\"\"$ are both perfect cubes, so can be factored using sum of cubes formula.

$\"\"$ (Sum of two cubes)

The simplified expression is $\"\"$ . $\"\"$

The factor form is $\"\"$ .