I need help for part 4 and 5 of question 3.

3. Decomposition SKS 7.1: Suppose that we decompose the schema R = (A, B, C, D, E) into R1 = (A, B, C) and R2 = (A, D, E). Given the following set of functional dependencies: A + BC CD + E B + D E + A 4. SKS 7.21: Give a lossless decomposition into BCNF of schema R. 5. SKS 7.22: Give a lossless, dependency-preserving decomposition into 3NF of schema R