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Nastya537
@Nastya537
July 2022
2
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Помогите найти х
x^3-3x^2-9x=0
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Answers & Comments
kesha232323
X=0
x=(3(+-)3×(корень из 5))/2
1 votes
Thanks 2
Acio50
X(x^2-3x-9)=0
решаем два уравнения
х=0
или
х^2-3х-9=0
D=9+36=45
x(1)=3+|45/2
x(2)=3-|45/2
2 votes
Thanks 3
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Answers & Comments
x=(3(+-)3×(корень из 5))/2
решаем два уравнения
х=0
или
х^2-3х-9=0
D=9+36=45
x(1)=3+|45/2
x(2)=3-|45/2