Răspunsuri

2014-06-04T21:36:17+03:00
Δ=b²-4ac
Δ=(-5)²-4*2*2
Δ=25-16
Δ=9
x1=(-b+√Δ)/2a = (5+3)/4=8/4=2
x2=(-b-√Δ)/2a= (5-3)/4=2/4=1/2
S={1/2, 2}
2 5 2
2014-06-04T22:02:07+03:00
2-5x+2=0
2-5x=2+0
2-5x=2
5x=2+2
5x=4
x=4:5
x=0,8
 Sper ca e bine!
1 5 1