Consider the following system of equations. -X + 8x - 2x3 + 4x4 2x - 16x + x3 X - 8x + 4x3 - 8x4 Row-reduce the augmented matrix of the system. (Order the columns from x to X4.) X1 Identify the free variables from the row reduced matrix. (Select all that apply.) X1 x2 x3 X2 X4 x3 X4 Use back substitution to write the variables corresponding to the leading variables in terms of the free variables. State the resulting solution. II -2 0 1 0 + S 8 = 0 2X4 = -3 2 0 = + t Need Help? 100