A) ? 6
B) ? 2
C) 2
D) 6
Correct Answer: A
Solution :
\[\left| \,\begin{matrix} 1 & -1 & 1 \\ 1 & 2 & -1 \\ 3 & p & 5 \\ \end{matrix}\, \right|=0\Rightarrow p=-6.\]You need to login to perform this action.
You will be redirected in
3 sec