Question

x & 4 & y + z \\ y & 4 & z + x \\ z & 4 & x + y \end{matrix} \right| =$$

• A. 4
• B. $x + y + z$
• C. xyz
• D. 0

Answer 1

Answer: (D)

0

Answer 2

Apply $C_{1} \rightarrow C_{1} + C_{3}$ and take $x + y + z$ common from $C_{1}$ and 4 from $C_{2}$ to make first two columns identical.