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M
3x²-2x-1=0
Δ=(-2)²-4·3(-1)=4+12=16,√Δ=4
x₁=(-b+√Δ)/2a=(2+4)/6=1
x₂=(-b-√Δ)/2a=(2-4)/6=-2/6= -1/3
odp:
x=0 x= 1 x= -1/3