Answer
$$6-2e^x-2e^xx$$
Work Step by Step
$6x-2xe^x$
$\frac{d}{dx}[6x]-(\frac{d}{dx}[2x]*(e^x)+(2x)*\frac{d}{dx}[e^x])$
$6-(2(e^x)+(2x)(e^x))$
$6-2e^x-2xe^x$
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