Răspunsuri

2014-09-27T17:02:48+03:00
|2x+3|=5
2x+3={5 ; -5 }   |-3
2x={2;-8}  | :2
x={ 1; - 4}
deci, e vorba de vorba de o ecuatie irationala, vei obtine: 2x+3=25, 2x=22,x=11, deci S={11}