Select all statements below which are true for all invertible n×n matrices A and B
A. (A+B)²=A²+B²+2AB
B. A+A²−1 is invertible
C. (In+A)(In+A²−1)=2In+A+A²−1
D. A²6 is invertible
E. (A+A²-1)²9=A²9+A²−9
F. AB=BA