Can I get help with this?

1. Use the set identities (i.e., no membership tables or Venn diagrams) to demonstrate that ((AUC) n B) u (C-D) nB) and ((AnB) u (cu (DUB))) u (CnB) are equivalent expressions. (5 marks) 2. Although the following image is sometimes used as the starting point for a four-set (2 marks) Venn Diagram, it is actually a poor choice. Explain why. 3. If the universe of discourse is all sets, then prove that VS (0 c S) is false. Show all (3 marks) your work