If ∣x2+xx+1x−22x2+3x−13x3x−3x2+2x+32x−12x−1∣=ax−12\begin{vmatrix} x^2 + x & x + 1 & x - 2 \\ 2x^2 + 3x - 1 & 3x & 3x - 3 \\ x^2 + 2x + 3 & 2x - 1 & 2x - 1 \end{vmatrix} = ax - 12…

Mathematics

Problem

If ∣x2+xx+1x−22x2+3x−13x3x−3x2+2x+32x−12x−1∣=ax−12\begin{vmatrix} x^2 + x & x + 1 & x - 2 \\ 2x^2 + 3x - 1 & 3x & 3x - 3 \\ x^2 + 2x + 3 & 2x - 1 & 2x - 1 \end{vmatrix} = ax - 12 then 'a' is equal to : (1) 12 (2) 24 (3) -24 (4) -12

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