Question

Evaluate the determinant.8 7 23 2 79 4 6А.-707B947-175175

Answer 1

`\begin{bmatrix}{8} & {7} & {2} \\ {3} & {2} & {7} \\ {9} & {4} & {6}\end{bmatrix}`

Using the triangle's rule

`8*2*6+7*7*9+2*3*4-9*2*2-4*7*8-6*3*7=175`