1. The problem statement, all variables and given/known data Find "a" when A is a square matrix satisfying (A+I)(A-I)=I and (A101)-1=2axA I is the identity matrix. 3. The attempt at a solution I'm trying to find A. I didn't know where to begin, so I picked A to be all zeroes and plugged it in the equation. It didn't work... I tried A = -1 -1 -1 -1 I ended up with 1 2 2 1 I want 1 0 0 1 Can some one give me a hint please.