Answer
$H$
Work Step by Step
If $area=lw$, then $area=(2x+3)(x-4)$
Use FOIL to multiply the polynomials
$area
\\=2x(x-4)+3(x-4)
\\=2x^{2}-8x+3x-12$
Combine like terms to obtain:
$area=2x^2+(-8x+3x)-12$
$area=2x^2-5x-12$
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