Explanation: 
Another Explanation (5):
bài giải thích chi tiết:
নির্ণায়কটি হলো:
\(\begin{vmatrix} \beta-2 & 1 \\ -5 & \beta+4 \end{vmatrix}\)
নির্ণায়কের মান \(0\) হলে,
\[(\beta-2)(\beta+4) - (1)(-5) = 0\]
\[\Rightarrow \beta^2 + 4\beta - 2\beta - 8 + 5 = 0\]
\[\Rightarrow \beta^2 + 2\beta - 3 = 0\]
\[\Rightarrow \beta^2 + 3\beta - \beta - 3 = 0\]
\[\Rightarrow \beta(\beta+3) - 1(\beta+3) = 0\]
\[\Rightarrow (\beta+3)(\beta-1) = 0\]
\[\Rightarrow \beta = 1, -3\]
সুতরাং, \(\beta\) এর মান \(1\) অথবা \(-3\)। 🎉
