A) \[5x-4y=0\]
B) \[5x+4y=0\]
C) \[4x-5y=0\]
D) \[4x+5y=0\]
Correct Answer: B
Solution :
From option B, \[\left| \text{ }\begin{matrix} 1 & \,\,2 & -10 \\ 2 & \,1 & \,\,5 \\ 5 & 4 & \,\,0 \\ \end{matrix}\text{ } \right|=1\text{ }(0-20)-2\text{ }(-25)-10\text{ }(3)=0\] Hence, option (b) is the correct answer.
You need to login to perform this action.
You will be redirected in
3 sec
