यदि \( p+q+r=a+b+c=0 \) तो \( \left|\begin{array}{lll}p a & q b & r c \\ q c & r a & p b \\ r b ...

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यदि \( p+q+r=a+b+c=0 \) तो \( \left|\begin{array}{lll}p a & q b & r c \\ q c & r a & p b \\ r b & p c & q a\end{array}\right|=0 \)
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