Class 12 Mathematics - Chapter Determinants NCERT Solutions | Evaluate the determinants \begin{vmatri
Evaluate the determinants
\begin{vmatrix} \mathbf{2} & \mathbf{4} \\ \mathbf{-5} & \mathbf{-1} \end{vmatrix}
\[ \begin{vmatrix} \mathbf{2} & \mathbf{4} \\ \mathbf{-5} & \mathbf{-1} \end{vmatrix} \]
= 2(−1) − 4(−5)
= − 2 + 20
= 18
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