Răspunsuri

2014-04-26T12:21:28+03:00
=5, adica 1, 2, -1, -2 si 0
2014-04-26T12:21:52+03:00
-2≤x ≤2  ⇒A∈{-2,-1,0,1,2}  ⇒multimea nr A are 5 elemente