Answer
$3x^2+3x+3$
Work Step by Step
By combining like terms, the given expression, $
(3x^2-2x+6)+(5x-3)
$, simplifies to
\begin{array}{l}\require{cancel}
3x^2-2x+6+5x-3
\\\\=
3x^2+(-2x+5x)+(6-3)
\\\\=
3x^2+3x+3
.\end{array}
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