Răspunsuri

2014-10-16T23:51:13+03:00
8n-2n²-4+n-6=0
-2n²+9n-10=0    (-1)
2n²-9n+10=0
Δ=81-80
Δ=1
n1=(9-1)/4=2
n2=(9+1)/4=10/4=5/2=2,5