Class 12 Determinants · Mcq Single Correct1 Marksdeterminant_equations
Class 12 Maths · Determinants · Mcq Single Correct #4
If \(\begin{vmatrix}2 & 3 & 2\\x & x & x\\4 & 9 & 1\end{vmatrix}\)+3=0, find x.
✅ Step-by-Step Solution
Final Answer: Option (C): −1
- Expansion along row 2 gives 3x. Thus 3x+3=0 and x=−1.
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CBSE Class 12 Mathematics 2026 Main Paper 65/1/1 · Q4
If Δ₁ = | 1 0 0; 0 2 0; 0 0 3 | and Δ₂ = | 0 2 0; 1 0 0; 0 0 6 |, then