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\begin{center}\section*{\textcolor{red}{Feuille d'exercices sur les factorisations}}\end{center}

Déterminez une forme factorisée de chacune des expressions suivantes.

\bigskip

\begin{exercice}
$\displaystyle A(x)=(2-10 x) (5 x-4)+(2-10 x) (10 x-8)$.
\end{exercice}

\begin{exercice}
$\displaystyle A(x)=-10 (-7 x-9)-10 (6 x+7)$.
\end{exercice}

\begin{exercice}
$\displaystyle A(x)=(-5 x-3) (4 x+5)+(-5 x-3) (7 x-6)$.
\end{exercice}

\begin{exercice}
$A(x)=(-x-9) (4 x-4)-(4 x-4) (5 x-7).$
\end{exercice}

\begin{exercice}
$A(x)=(-4 x-1) (-2 x-8)-(-4 x-1) (-x-4).$
\end{exercice}

\begin{exercice}
$A(x)=3 (3 x+2) (9 x-2)+(7 x+1) (9 x-2).$
\end{exercice}

\begin{exercice}
$A(x)=-4 (x+1) (10 x+7)-(9 x-1) (10 x+7).$
\end{exercice}

\begin{exercice}
$f(x)=64 x^2+144 x+81$.
\end{exercice}

\begin{exercice}
$f(x)=49 x^2-126 x+81$.
\end{exercice}

\begin{exercice}
$f(x)=4 x^2-32 x+64$.
\end{exercice}

\begin{exercice}
$f(x)=25 x^2-100 x+100$.
\end{exercice}

\begin{exercice}
$f(x)=81 x^2-4$.
\end{exercice}

\begin{exercice}
$f(x)=\frac{x^2}{4}+\frac{7 x}{2}+\frac{49}{4}$.
\end{exercice}

\begin{exercice}
$f(x)=\frac{25 x^2}{9}-10 x+9$.
\end{exercice}

\begin{exercice}
$f(x)=81 x^2-\frac{1}{64}$.
\end{exercice}

\begin{exercice}
$A(x)=2 \left(100 x^2-4\right)-8 (-10 x-2) (-7 x-5)$.
\end{exercice}

\begin{exercice}
$ A(x)=16 x^2+72 x+81-(10-7 x) (4 x+9)$.
\end{exercice}

\begin{exercice}
$A(x)=4 (3-9 x) (2 x-7)-6 \left(81 x^2-9\right)$.
\end{exercice}




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