\left| \begin{array} { l l } { 12 } & { 8 } \\ { 3 } & { 13 } \end{array} \right|
Evaluate
132
Factor
2^{2}\times 3\times 11
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det(\left(\begin{matrix}12&8\\3&13\end{matrix}\right))
Find the determinant of the matrix.
12\times 13-8\times 3
For the 2\times 2 matrix \left(\begin{matrix}a&b\\c&d\end{matrix}\right), the determinant is ad-bc.
156-8\times 3
Multiply 12 times 13.
156-24
Multiply 8 times 3.
132
Subtract 24 from 156.
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