Answer
$(3x-2)(3x+1)$
Work Step by Step
Group the first two terms together; then, group the last two terms together to obtain:
$=(9x^2-6x) + (3x-2)$
Factor out the GCF of each group ($3x$ in the first and $1$ in the second):
$=3x(3x-2) +1(3x-2)$
Factor out the GCF $(3x-2)$ to obtain:
$=(3x-2)(3x+1)$