Given a square matrix A: (1.1) We perform the operation A = (1.2) We perform the operation 2-1 1 1 1 -3 K4 23 3 1 R R-2R Find the matrices E and B such that E A = B (Hint: Find E then perform E A to obtain the matrix B). Find value(s) for k = [-1, 0] (whenever possible) such that a33 = a33 where [a]