Please box or make the answers bold. Step by step so I can understand.

Characterizations of Invertible Matrices: Problem 3 (1 point) Select all statements below which are true for all invertible n x n matrices A and B O A. A + B is invertible O B. A' BB is invertible O C. (In - A)(In + A) = In - A2 O D. AB = BA DE. (A + B)2 = A2 + B2 + 2AB OF. (AB) -1 = A-1B-1Characterizations of Invertible Matrices: Problem 4 (1 point) Are the following matrices invertible? 35 Choose 1. 0 2 Choose v 2. 0 5 Choose V 3. 5 4 7 3 Choose V 4. 35 -15Characterizations of Invertible Matrices: Problem 5 (1 point) 2 5 The matrix is invertible if and only if k 7 k OCharacterizations of Invertible Matrices: Problem 6 (1 point) 1 17 For what values of c will A = be invertible? C C2 For all c such that c # and cCharacterizations of Invertible Matrices: Problem 7 (1 point) Find the inverse of AB if 4 -4