Question

Determinati elementele multimii A={x € Z | 17/x-2 € Z }

Answer 1

(D-divizor)

x-2 apartine D17={+1;-1;+17;-17}

x-2=1

x=1+2=3

x-2=-1

x=-1+2=1

x-2=17

x=17+2=19

x-2=-17

x=-17+2=-15

A={-15;1;3;19}

Answer 2

x-2=1x=1+2=3
x-2=-1x=-1+2=1
x-2=17x=17+2=19
x-2=-17x=-17+2=-15A={-15;1;3;19}