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\begin{enumerate}

\item ���̕������̂���$2$���������ŉ���$-2$�ł�����̂͂ǂ�ł����B

\begin{tabular}{@{}c@{\,\,}cc@{\,\,}c@{}}
\ajMaru{1} & $x^2-2=0$ & \ajMaru{2} & $(x+2)(x-5)=-8$ \\
\ajMaru{3} & $x^2-7x=18$ & \ajMaru{4} & $x^2-3x=x^2+6$ \\
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%%%�Q���������̉�@

\item ����$2$���������������Ȃ����B

\begin{enumerate}

\item $x^2+3x-10=0$

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\item $(x-3)^2-6=1$

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\item $x^2+4x-2=0$

\vspace{-1mm}
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\item $x^2+12x+36=0$

\vspace{-1mm}
\hspace{-10mm}����������

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\item $2x^2+5x=3$

\vspace{-1mm}
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\item $x^2=-6x$

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\item $4x^2=8x-3$

\vspace{-1mm}
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{\color{white}{$x=\dfrac{-(-8)\pm\sqrt{(-8)^2-4\times 4\times 3\,}\,}{2\times 4}$}}

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\item $x^2-3=x$

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\end{enumerate}

\newpage

\item $2$��������$x^2+6x-5=0$��$(x+p)^2=q$�̌`�ɒ����ĉ����Ȃ����B

\hspace{-5mm}
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������������ѓ��� \\[-12pt]
~\hspace{85mm}~ \\[-8pt]
{\color{white}{
\begin{tabular}{@{}r@{}c@{}l@{}}
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$(x+3)^2$    & $\,=\,$ & $14$\\[-2pt]
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\vspace{1mm}
\item $2$��������$x^2+ax+12=0$�̉���$1$��$x=3$�̂Ƃ�$a$�̒l�����߂Ȃ����B
�܂����̂Ƃ��̕ʂ̉������߂Ȃ����B

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������������ѓ��� \\
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{\color{white}{
\begin{tabular}{@{}r@{}c@{}l@{}}
$3^2+a\times 3+12$ & $\,=\,$ & $0$ \\
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$a$ & $\,=\,$ & $-7$ \\
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&

{\color{white}{
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\\[-12pt]
~\hspace{85mm}~\\
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\\
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\vspace{2mm}
\item �A������$3$�̐���������܂��B���ꂼ��̐�����2�悵�āC�a�����߂���302�ɂȂ�܂����B
���̂Ƃ��C$3$�̐��������������苁�߂Ȃ����B���𕶎��ŕ\�����̂���K�������Ȃ����B

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 \\
 \multicolumn{1}{@{}|@{\vrule width 0.3pt}c@{}|@{\vrule width 0.3pt}}{{\color{white}{$x^2+(x+1)^2+(x+2)^2=302$}}} \\[-10pt]
~\hspace{85mm}~ \\
\hline
������������ѓ��� \\
{\color{white}{
\begin{tabular}{@{}r@{}c@{}l@{}}
$3x^2+6x-297$ & $\,=\,$ & $0$ \\
$x^2+2x-99$ & $\,=\,$ & $0$ \\
$(x+11)(x-9)$ & $\,=\,$ & $0$ \\
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\\
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\item �E�}�̂悤�ɔ��a$30$\ajLig{m}�̉~�`�̉Ԓd�̒��������ɓ������܂��B���̖ʐς��~�S�̖̂ʐς�$\dfrac{1}{\,3\,}$�ɂ��邽�߂ɂ͓��̕�����\ajLig{m}�ɂ���΂悢�ł����B
���̕���$x$\ajLig{m}�Ƃ��ĕ�����������ċ��߂Ȃ����B�������~������\,$\pi$\,�Ƃ��܂��B
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\vspace{2mm}
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���������� \\
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$30\pi x$ & $\,=\,$ & $300\pi$ \\
$x$ & $\,=\,$ & $10$ \\
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\end{enumerate}
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