Higher Secondary Question Paper Solution of Year 2018 Question No: A.2.(b)(ii)
\(\begin{vmatrix} x-1 & 1 & 1 \\[0.3em] 1 & x +1 & -1 \\[0.3em] -1 & 1 & x+ 1 \end{vmatrix} = 0\) হলে x-এর মান নির্ণয় করো ।

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