1. The problem statement, all variables and given/known data question 1: If A is a matrix satisfying 3A^2+6A-I=0, find the inverse of A. question 2: Let A be a 3x3 matrix with 4A = A^7. Find the possible values det A. 2. Relevant equations none 3. The attempt at a solution this was a very long homework about 17 questions, i solved the others but i got no clue where to start with these, any help is appreciated. Best Regards.