Question

Va rog ajutatima cum se rezolva inecuaţiile

Answer 1

Exemple de inecuații:

1). -2x+4<0
-2x<4-0
-2x<-4
X< -2/-4
X<0.5 => x={0.1 , 0,2 , 0.3 ,0.4 }




2). -12x-6<2
-12x<-6+2
-12x< -4
x<-12/-4
x<3 =>x={1,2,3}



3) 20x>2
X>20/2
x>10 => x={11...12...13.......}


4). 21x+2>9
21x>2-9
21x>-7
x> 21/-7
x=-3