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llonna1
@llonna1
July 2022
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nikagaming9
1)(^ - степень, / - дробь)
x^2-6x+1=0
D=b^2-4ac
D=36-4*1*1=32
x= -b±√D
x1= 6+5.7/2*1=11,7/2=5,85
x2= 6-5.7/2=0.15
2)
x^2-6x-1=0
D=36-4*1*(-1)=40
x1=6+6.3/2=6.15
x2=6-6.3/2=-0.15
3)
x^2-6x+2=0
D=36-4*1*2=28
x1=6+5.3/2=5.65
x2=6-5.3/2=0.35
4)
x^2-6x+4=0
D=36-4*1*4=20
x1=6+4.5/2=5.25
x2=6-4.5/2=0.75
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Answers & Comments
x^2-6x+1=0
D=b^2-4ac
D=36-4*1*1=32
x= -b±√D
x1= 6+5.7/2*1=11,7/2=5,85
x2= 6-5.7/2=0.15
2)
x^2-6x-1=0
D=36-4*1*(-1)=40
x1=6+6.3/2=6.15
x2=6-6.3/2=-0.15
3)
x^2-6x+2=0
D=36-4*1*2=28
x1=6+5.3/2=5.65
x2=6-5.3/2=0.35
4)
x^2-6x+4=0
D=36-4*1*4=20
x1=6+4.5/2=5.25
x2=6-4.5/2=0.75