A) \[1\]
B) \[3\]
C) \[5\]
D) \[7\]
Correct Answer: C
Solution :
Given, \[\left| \begin{matrix} x+7 & 5 \\ x-3 & 3 \\ \end{matrix} \right|=26\] \[\Rightarrow \] \[3(x+7)-5(x-3)=26\] \[\Rightarrow \] \[3x+21-5x+15=26\] \[\Rightarrow \] \[-2x+36=26\] \[\Rightarrow \] \[2x=10\] \[\Rightarrow \] \[x=5\]You need to login to perform this action.
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