Answer
$2x^2+6x+4$
Work Step by Step
The given phrase translates to
\begin{array}{l}\require{cancel}
2x^2+8x-3-(2x-7)
.\end{array}
Removing the grouping symbols and then combining like terms, the expression above simplifies to
\begin{array}{l}\require{cancel}
2x^2+8x-3-2x+7
\\\\=
2x^2+(8x-2x)+(-3+7)
\\\\=
2x^2+6x+4
.\end{array}
