Without expanding, show that the value of each of the following determinants is zero:
\[
\left|\... VIDEO
Without expanding, show that the value of each of the following determinants is zero:
\[
\left|\begin{array}{rrr}
2 & 3 & 7 \\
13 & 17 & 5 \\
15 & 20 & 12
\end{array}\right|
\]
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