-x²-3x+1=0
Д=b²-4*a*c
Д=9-4*(-1)*1=13
x1=
x2=
- х ²-3х+1 =0
D=b²-4ac=9+4=13
x=(-b+√D)/(2a)=(-3+√13)/2
x=(-b-√D)/(2a)=(-3-√13)/2.
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-x²-3x+1=0
Д=b²-4*a*c
Д=9-4*(-1)*1=13
x1=
x2=
- х ²-3х+1 =0
D=b²-4ac=9+4=13
x=(-b+√D)/(2a)=(-3+√13)/2
x=(-b-√D)/(2a)=(-3-√13)/2.