How do you find the determinant of #|(25, 36, 15), (31,-12,-2), (17,15,9)|#?

1 Answer
May 19, 2017

Answer:

The answer is #=-3183#

Explanation:

The determination of the determinant is as follows .

#| (25,36,15), (31,-12,-2), (17,15,9) | #

#=25| (-12,-2), (15,9) | -36| (31,-2), (17,9) | +15| (31,-12), (17,15) | #

#=25(-12*9+2*15)-36(31*9+17*2)+15(31*15+17*12)#

#=25*-78-36*313+15*669#

#=-3183#