Please answer urgently!

Part 1: Knowledge / Understanding [15 marks] 1. If u = [3, -2, -1] and v = [2, -1, 5] find: a) 30 - 1 [2 marks] b) lu + 8 -2k| [3 marks] c) Find G, where F(5, -3, 2) and FG = 20 [3 marks] 2. If c = [m, n, 1] is perpendicular to both a = [4, 1, -2] and b = [6, -3, -8], find m and n. (leave in fraction form for final solutions) [3 marks]