Question 14, 2.2.43 HW Score: 89.81%, 16.17 of 18 points Part 1 of 7 O Points: 0 of 1 Save Use the algorithm for finding A" to find the inverses of the matrices shown to the right. Let A be the corresponding n n matrix, and let B be its inverse. Guess the form 15 0 0 0 of B, and then show that AB = I. 15 0 0 15 15 0 0 15 15 0 and 15 15 15 0 15 15 15 15 15 15 15 15 0 0 15 15 0 15 15 15 (Type an integer or simplified fraction for each matrix element.) If a matrix A is 3 x7 and the product AB is 3 x2, what is the size of B? The size of B is XQuestion 8, 2.1.12 HW Score: 43.75%, 7 of 16 points O Points: 0 of 1 5 - 20 Let A = Construct a 2 x2 matrix B such that AB is the zero matrix. Use two different nonzero columns for B. - 5 20 B =