Question

How do you find the determinant of `|(13,7), (-5,-8)|`?

Answer 1

`|(13,7), (-5,-8)|= -69`

Explanation:

`det ( (13,7), (-5,-8) ) = |(13,7), (-5,-8)|`

`= (13)(-8) - (-5)(7)`
`= -104 + 35`
`= -69`