A) - 1
B) 1
C) 2
D) 0
Correct Answer: C
Solution :
\[\left| \,\begin{matrix} p+1 & 1 & 1 \\ 2p+1 & 3 & 1 \\ 2p+2 & 2p & 1 \\ \end{matrix}\, \right|=0\] \[\Rightarrow \,\,(p+1)\,(3-2p)+1(2p+2-2p-1)\]\[+1\,[(2p)\,(2p+1)-3\,(2p+2)]=0\] \[\Rightarrow \,\,p=2\].You need to login to perform this action.
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