2x2+ 5 x +2=0 rezolvati

Răspuns :

 2 × 2 + 5 x  + 2 = 0

4 + 5x + 2 =0

5x = - 2 - 4

5x =  - 6

x = -  6/5= - 1si 1/5
2x2+5x+2=0
4+5x+2=0
5x+6=0
5x=-6
x=-6:5=-1.2

X= -1.2