Answered You can hire a professional tutor to get the answer.
Suppose that A \ B C D and x A. Use the method of quot;proof by contradictionquot; to show that if x C, then x B.
Suppose that A B ⊆ C ∩ D and x ∈ A. Use the method of "proof by contradiction" to show that if x ∉ C, then x ∈ B.