Answer
$-2x^2-5x$
Work Step by Step
The given problem translates to $
(3x^2-2x)-(5x^2+3x)
$. Simplifying this results to
\begin{array}{l}
3x^2-2x-5x^2-3x
\\=
(3x^2-5x^2)+(-2x-3x)
\\=
-2x^2-5x
.\end{array}
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