Answer
$6x^2-11x-7$
Work Step by Step
Using $(a+b)(c+d)=ac+(ad+bc)+bd$, or the FOIL Method, the given expression, $
(3x-7)(2x+1)
,$ is equivalent to
\begin{array}{l}\require{cancel}
6x^2+(3x-14x)-7
\\\\=
6x^2-11x-7
.\end{array}
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