Răspunsuri

2014-10-07T16:35:47+03:00
A) Δ=0
Δ=b²-4ac
Δ=m²-4=0 m²=4
m=+,-2
b) Δ>0
m²-4>0 m∈(-∞,-2) U(2,+∞)
c)Δ<0
m∈(-2,2)