%
%	GenEduQ0001
%
%	Seed = -1 (-1488580597)
%

\Ques{1}{
$6x-y+3z=-2x+5y+9z=8x-5y+z$ �������������$0$�Ǥʤ��¿�$x,y,z$��$x:y:z=[1]:(-[2]):[3]$�Ǥ��롣�ޤ���$\displaystyle \frac{x^2-y^2+z^2}{x^2+y^2+z^2}=\frac{[4][5]}{[6][7]}$�Ǥ��롣
}{
[1] 3 \hspace{5mm}
[2] 1 \hspace{5mm}
[3] 5 \hspace{5mm}
[4] 3 \hspace{5mm}
[5] 3 \hspace{5mm}
[6] 3 \hspace{5mm}
[7] 5 \hspace{5mm}
}{
}

