Question

Find the determinant

[1 3 1 ]
2 1 -5
3 -1 -4

Answer 1

I got -35. is correct?

Answer 2

yes that is correct :)

Answer 3

Yea I think ur CORRECT

Answer 4

Woo! Thanks!

Answer 5

(1)(1)(-4)+(3)(3)(-5)+(1)(-1)(2)=-36
-3-5+24=16-------------->+16=20

|A|=20

Answer 6

-35!

Answer 7

@bnut you added up your first line wrong:
(1)(1)(-4)+(3)(3)(-5)+(1)(-1)(2) = -51
-51+16 = -35

Answer 8

oh shoot i did hahah what a boner