Answer
$14x^2+13x-12$
Work Step by Step
Using $(a+b)(c+d)=ac+(ad+bc)+bd$, or the FOIL Method, the given expression, $
(7x-4)(2x+3)
,$ is equivalent to
\begin{array}{l}\require{cancel}
14x^2+(21x-8x)-12
\\\\=
14x^2+13x-12
.\end{array}
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