This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
If n is odd, then  A^n  is  skew symmetric .  the determinant is zero.

if n is even,  A^n  is symmetric matrix.   All the diagonal elements are positive or, all of the m are negative.    The determinant is always positive.  All non-diagonal elements are either negative or positive, but, opposite in sign as compared to the diagonal elements.

1 5 1