Finding the determinant of a 4x4 matrix by using elementary row operations and cofactor expansions

[jaysonhaddon]

Thanks you, sick of worthless teachers and textbooks, they make these classes an absolute waste of time.

[not.]

why did you pull the 8 out? when you can simply just divide by 8? since this is a matrix? why was the 8 outside on the side? I thought you can simply just divide it by 8 and that would still be the same matrix
]