Answer
$(3x-2)(x^2+6)$
Work Step by Step
Group the first two terms and the last two terms to obtain:
$=(3x^3-2x^2)+(18x-12)$
Factor out the GCF in each group ($x^2$ in the first and $6$ in the second) to obtain:
$=x^2(3x-2) + 6(3x-2)$
Factor out the GCF $3x-2$ to obtain:
$=(3x-2)(x^2+6)$
