Score: 0 of 1 pt 23 of 30 (23 complete) 1.5.5 Write the solution set of the given homogeneous system in parametric vector form. 4x1+4x2 + 8x3 = 0 -12x1-12x2-24x3 = 0 -4x2+ 12%3 0 where the solution set is x x2 XEX3 (Type an integer or simplified fraction for each matrix element.) ti