Please help solving and showing the work for the following Matrices and Linear Algebra questions! Thanks in advance!

(6) Consider the following sequence of matrices, which is obtained by starting with A and performing two elementary row operations: A = 2 (a) Find the elementary matrix E, corresponding to operation (1). (b) Find the elementary matrix E2 corresponding to operations (2). (c) Find the matrix product E2EIA.(7) Use the Gauss-Jordan elimination method to find the inverse of the matrix CO -3 Be sure to show all of your row operations.(8) Suppose a, b, c, and d are numbers, and consider the matrix - NO A A CT R O b C (a) Find the cofactor C43 of A. (b) You are now given the following cofactors of A: C31 = 7, C32 = -5, C33 = 3, and C34 = -6. Find det(A).(9) Find the area of the triangle in R3 with vertices (0, 1, 2), (2, -4, 2), and (4, -6, 2). (10) Find the volume of the parallelepiped defined by the vectors