Problem 1. Part a. (15 points) Find the inverse of matrix B where B is equal to 0 10 B= 1 1 1 -3 2 1 You must provide detailed steps for row operations. Part b. (5 points) Given a 4 x 4 matrix A: A = the first column of A-¹ is 2 5 -15 1 0 0 0 -2 1 0 0 1-3 1 0 check if -3 4 21