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\begin{document}


\begin{center}\section*{\textcolor{red}{ Correction du contrôle}}\end{center}
%noté sur 9 (6 x 1,5)

\begin{enumerate}[$A(x)=$~]
\item $(x+1)(x+3)=x^2+3x+x+3=\boxed{\textcolor{red}{x^2+4x+3}}$

\bigskip

\item $(2x+8)(x+5)=2x^2+10x+8x+40=\boxed{\textcolor{red}{2x^2+18x+40}}$

\bigskip

\item $(4x-1)(x+2)=4x^2+8x-x-2=\boxed{\textcolor{red}{4x^2+7x-2}}$

\bigskip

\item $(5x+4)(4x+7)=20x^2+35x+16x+28=\boxed{\textcolor{red}{20x^2+51x+28}}$

\bigskip

\item $(4x+3)(3x-2)=12x^2-8x+9x-6=\boxed{\textcolor{red}{12x^2+x-6}}$

\bigskip

\item $(7x-4)(2x-1)=14x^2-7x-8x+4=\boxed{\textcolor{red}{14x^2-15x+4}}$
\end{enumerate}

\label{fin}
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\label{fin}
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