A) 25
B) \[-25\]
C) 0
D) \[-75\]
Correct Answer: B
Solution :
\[\left| \begin{matrix} 4 & -6 & 1 \\ -1 & -1 & 1 \\ -4 & 11 & -1 \\ \end{matrix} \right|=4[1-11]-(6)[1+4]+1[-11-4]\] \[=4[-10]+6[5]+1[-15]\] \[=-40+30-15\] \[=-55+30=-25\]You need to login to perform this action.
You will be redirected in
3 sec