A) \[{{\Delta }^{2}}\]
B) \[4\Delta \]
C) \[3\Delta \]
D) None of these
Correct Answer: B
Solution :
Let \[{{\Delta }_{1}}=\left| \,\begin{matrix} x & 2y & z \\ 2p & 4q & 2r \\ a & 2b & c \\ \end{matrix}\, \right|\]=\[4\,\left| \,\begin{matrix} x & y & z \\ p & q & r \\ a & b & c \\ \end{matrix}\, \right|=4\Delta \]. (Taking common '2' from IInd row and '2' from IInd column).
You need to login to perform this action.
You will be redirected in
3 sec
