Contoh Minipage

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\textbf{Soal.}\\
Bentuk sedrhana dari $\displaystyle\frac{\left(\sqrt{3}+\sqrt{7}\right)\left(\sqrt{3}-\sqrt{7}\right)}{2\sqrt{5}-4\sqrt{2}}$ adalah \ldots.
\begin{enumerate}[A.,leftmargin=*]
    \item $\displaystyle\tfrac{2}{3}\left(\sqrt{5}+2\sqrt{2}\right)$
    \item $\displaystyle\tfrac{2}{3}\left(2\sqrt{2}-\sqrt{5}\right)$
    \item $\displaystyle-\tfrac{2}{3}\left(2\sqrt{5}+4\sqrt{2}\right)$
    \item $\displaystyle-\tfrac{4}{9}\left(2\sqrt{5}+4\sqrt{2}\right)$
    \item $\displaystyle-\tfrac{4}{9}\left(2\sqrt{5}-\sqrt{2}\right)$
\end{enumerate}
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\textbf{Jawaban: A}
\begin{align*}
\frac{\left(\sqrt{3}+\sqrt{7}\right)\left(\sqrt{3}-\sqrt{7}\right)}{2\sqrt{5}-4\sqrt{2}} &=
\frac{3-7}{2\left(\sqrt{5}-2\sqrt{2}\right)} \\
&= \frac{-4}{2\left(\sqrt{5}-2\sqrt{2}\right)}\\
&= \frac{-2}{\sqrt{5}-2\sqrt{2}}{\color{red}{}\times\frac{\sqrt{5}+2\sqrt{2}}{\sqrt{5}+2\sqrt{2}}}\\
&= \frac{-2\left(\sqrt{5}+2\sqrt{2}\right)}{5-8}\\
&= \tfrac{2}{3}\left(\sqrt{5}+2\sqrt{2}\right)
\end{align*}
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