2: Cho A, B, C là các tập hợp. Chứng minh rằng (a) A∩ (B\C) = (A∩ B)\(A∩ C).
(b) A∪ (B\A) = A∪ B.
(c) A\(A\B) = A∩ B.
(d) (A\B)\C = (A\C)\(B\C).

number one is the correct answer

step-by-step explanation: dogs and cats are mentioned, no other animals

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13