questions below:

5 -9 9 5 Let A: = and B: = Verify that AB # BA. - 8 4 8 5 Find AB. AB Find BA. BA =Find all solutions to the system using the Gaussdorclan elimination algorithm. 3x1 + 6x2 + 3x3 = El 511 + X2 BXS = Cl 3X1 + 5X2 _ 6X3 = 9 Select the correct choice below and. if necessary, ll in the answer boxes to complete your choice. D 11- The system has a unique solution x1: El x2 = D x3 = D D E. The system has an infinite number of solutions characterized as follows. x1=|:|,x2=|:|,x3=s, m