21. If A = 2i - 3j - k, B = i + 4j - 2k. Find (a) A x B (b) B x A, and (c) (A + B) x (A - B). Scalars and Vectors problem no 21. Sindh Textbook Board (stb) problems

21. If A = 2i - 3j - k, B = i + 4j - 2k. Find (a) A x B (b) B x A, and (c) (A + B) x (A - B)