Answer
$6w^2-13tw+6t^2$
Work Step by Step
Using $(a+b)(c+d)=ac+ad+bc+bd$ or the FOIL Method, the product of the given expression, $
(3w-2t)(2w-3t)
,$ is
\begin{array}{l}\require{cancel}
3w(2w)+3w(-3t)-2t(2w)-2t(-3t)
\\\\=
6w^2-9tw-4tw+6t^2
\\\\=
6w^2-13tw+6t^2
.\end{array}