Răspunsuri

2014-10-01T15:49:56+03:00
A = { x ∈ R | -2 < x < 1}=(-2;1)
B= { x ∈ R | x<4} =(-∞;4)
C={ x ∈ R | x ≥ -3 } =[-3;+∞)
D= { x ∈ R | -10 ≤ x ≤ - 8} =[-10;-8]