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Amanta05
@Amanta05
July 2022
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Решите уравнение.
x^3-0,1x=0,3x^2
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tlq
Х³-0,1х=0,3х²
х³-1/10x=3/10x²
x³-1/10x-3/10x²=0
х(х²-1/10-3/10x)=0
x=0
x²-1/10-3/10x=0
x=0
x=1/2
x=-1/5
x1=-1/5
x2=0
x3=1/2
4 votes
Thanks 4
2407Alexa
X^3-0,1x-0,3x^2=0
x(x^2-0,3x-0,1)=0
x=0
x^2-0,3x-0,1=0|*10
10x^2-3x-1=0
D=(-(-3))^2-4*10*(-1)=9+40=49
x1=(-(-3)-V49)/2*10=(3-7)/20=-4/20=-0,2
x2=(-(-3)+V49)/2*10=(3+7)/20=10/20=0,5
2 votes
Thanks 6
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Answers & Comments
х³-1/10x=3/10x²
x³-1/10x-3/10x²=0
х(х²-1/10-3/10x)=0
x=0
x²-1/10-3/10x=0
x=0
x=1/2
x=-1/5
x1=-1/5
x2=0
x3=1/2
x(x^2-0,3x-0,1)=0
x=0
x^2-0,3x-0,1=0|*10
10x^2-3x-1=0
D=(-(-3))^2-4*10*(-1)=9+40=49
x1=(-(-3)-V49)/2*10=(3-7)/20=-4/20=-0,2
x2=(-(-3)+V49)/2*10=(3+7)/20=10/20=0,5