Solve the following linear system by Gaussian elimination. X1 + 4x2 + 4x3 = 36 -x1 - 5x2 + 5X3 =-4 2x1 - 6x2+ 6X3 = 8 X1 = X2 = X3 = i e Textbook and Media Save for Later Last saved 20 minutes ago. Saved work will be auto-submitted on the due date. Auto-Determine the values of a for which the system has no solutions, exactly one solution, or infinitely many solutions. x + 3y - z = 1 2x - y + 2z = 3 4x + 5y + ( a2 - 9)z = a+2 For a = there is no solution . For a = there are infinitely many solutions. For a # + the system has exactly one solution. eTextbook and Media Save for Later Attempts: 0 of 5 used