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Problems
If
∣
x
3
6
6
x
3
3
6
x
∣
=
∣
2
x
7
7
2
x
x
7
2
∣
=
∣
4
5
x
5
4
x
x
x
4
∣
=
0
\begin{vmatrix} x & 3 & 6 \\ 6 & x & 3 \\ 3 & 6 & x \end{vmatrix} = \begin{vmatrix} 2 & x & 7 \\ 7 & 2 & x \\ x & 7 & 2 \end{vmatrix} = \begin{vmatrix} 4 & 5 & x \\ 5 & 4 & x \\ x & x & 4 \end{vmatrix} = 0
x
6
3
3
x
6
6
3
x
=
2
7
x
x
2
7
7
x
2
=
4
5
x
5
4
x
x
x
4
=
0
…
Mathematics
Problem
If
∣
x
3
6
6
x
3
3
6
x
∣
=
∣
2
x
7
7
2
x
x
7
2
∣
=
∣
4
5
x
5
4
x
x
x
4
∣
=
0
\begin{vmatrix} x & 3 & 6 \\ 6 & x & 3 \\ 3 & 6 & x \end{vmatrix} = \begin{vmatrix} 2 & x & 7 \\ 7 & 2 & x \\ x & 7 & 2 \end{vmatrix} = \begin{vmatrix} 4 & 5 & x \\ 5 & 4 & x \\ x & x & 4 \end{vmatrix} = 0
x
6
3
3
x
6
6
3
x
=
2
7
x
x
2
7
7
x
2
=
4
5
x
5
4
x
x
x
4
=
0
, then
x
x
x
is equal to a. 0 b. -9 c. 3 d. None of these
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