Question

I need help plsssssss ;-;

1) Factorize. 2a² - 8

2)Among the sets, P = {3,4,5,6} , Q = {0,1,2,3} , R = {5,6,7,8,9}
i) write a pair of disjoint sets
ii)name a pair of equivalent sets

3) Out of the students in the class, 3/7 are girls. If there are 24 boys in the class, find the total number of students in the class.​

Answer 1

1. 2(a
2. 
   `2(a^2-4)`