Question

va rog dau ori ce ajutați mă ​

Answer 1

a) lxl < 3

-3 < x < 3

x apartine multimii = {-2;-1;0;1;2}

b) 2(x-4,5) ≤ x+1

2x-9 ≤ x+1 (scazi x)

x-9 ≤ 1 (aduni 9)

x ≤ 10

x apartine multimii = {...;-3;-2;-1;0;1;2;...;8;9;10}