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CUET · MATHS · PYQ PAPER 2023

If \(\left|\begin{array}{lll}a+x & a-x & a-x \\ a-x & a+x & a-x \\ a-x & a-x & a+x\end{array}\right|=0\), then the values of \(x\) are:

  1. A \(0, a\)
  2. B \(a, 2 a\)
  3. C \(0,3 a\)
  4. D \(0,2 a\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(0,3 a\)

Step-by-step Solution

Detailed explanation

\(R_1 \to R_1 + R_2 + R_3 \implies \left|\begin{array}{ccc}3a-x & 3a-x & 3a-x \\ a-x & a+x & a-x \\ a-x & a-x & a+x\end{array}\right|=0\) \((3a-x) \left|\begin{array}{ccc}1 & 1 & 1 \\ a-x & a+x & a-x \\ a-x & a-x & a+x\end{array}\right|=0\)…