TS EAMCET · Maths · Determinants
If \(\left[\begin{array}{rrr}1 & 2 & x \\ 4 & -1 & 7 \\ 2 & 4 & -6\end{array}\right]\) is a singular matrix, then \(x\) is equal to
- A \(0\)
- B \(1\)
- C \(-3\)
- D \(3\)
Answer & Solution
Correct Answer
(C) \(-3\)
Step-by-step Solution
Detailed explanation
Let \(A=\left[\begin{array}{ccc}1 & 2 & x \\ 4 & -1 & 7 \\ 2 & 4 & -6\end{array}\right]\) is a singular matrix Then, \(|A|=0\)…
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