Question

determinati multimea A={x€ Z | x-4supra2

Answer 1

x - 4 | 2 ==> x-4 ∈ $D_{2}$ = {-2;-1;1;2}

x - 4 = -2
x = -2 + 4
x = 2

x - 4 = -1
x = -1 + 4
x = 3

x - 4 = 1
x = 1 + 4
x = 5

x - 4 = 2
x = 2 + 4
x = 6

A = {2;3;5;6}