# How do you find the determinant of ((-2, 1), (3, 8))?

Jul 19, 2018

$- 19$.

#### Explanation:

$\text{The Reqd. Detrmnt.} = | \left(- 2 , 1\right) , \left(3 , 8\right) |$,

$= \left(- 2\right) \left(8\right) - \left(3\right) \left(1\right)$,

$= - 16 - 3$,

$- 19$.