The expression $\displaystyle {2}{\left({5}{x}^{{3}}+{3}{x}^{{2}}-{5}{x}+{7}\right)}-{\left({4}{x}^{{2}}+{7}{x}-{5}\right)}$ equals
$\displaystyle {x}^{{3}}+$ $\displaystyle {x}^{{2}}+$ $\displaystyle {x}+$

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