Let U= (x:x € 2,0 ≤ x < 15} A = { x:x € N and (x- (m+3)(x-(m + 2) = 0), B = (8,6,7,9) and a. Write set U and set A in roster form. b. Verity: (A-B) # A - B (4 marks) (9 marks)