Răspuns :
2* |2x+1|-5 <= 1
|2x+1|<= 3
-3<=2x+1<=3
-4<=2x<=2
-2<=x<=1
a) A= [-2,1] cardB=2 {0,1}
c) A ∪ {-1; 0; 1; 2; 3} = {-1; 0; 1;}
2* |2x+1|-5 <= 1
|2x+1|<= 3
-3<=2x+1<=3
-4<=2x<=2
-2<=x<=1
a) A= [-2,1] cardB=2 {0,1}
c) A ∪ {-1; 0; 1; 2; 3} = {-1; 0; 1;}