Question

1. Find the determinant of A.
A.-2
B. 29
C.2.
D. 13

Answer 1

13

Explanation:

To find the determinant you subtract the the leading diagonal from the non-leading diagonal.

(4x-2)-(-7x3)

-8 - -21

NB A negative beside a negative gives you a positive number.

-8+21

=13