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grovnitch
@grovnitch
July 2022
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Решите уравнение
x^3+5x^2-x-5=0
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fiofionina
Verified answer
Решение:
х³+5х²-х-5=0
(х³+5х²) - (х+5)=0
х²(х+5) -1(х+5)=0
(х2-1)(х+5)=0
х²-1=0
х²=1
х1,2=+-√1
х1=1
х2=-1
х+5=0
х3=-5
Ответ: х1=1; х2=-1; х3=-5
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Verified answer
Решение:х³+5х²-х-5=0
(х³+5х²) - (х+5)=0
х²(х+5) -1(х+5)=0
(х2-1)(х+5)=0
х²-1=0
х²=1
х1,2=+-√1
х1=1
х2=-1
х+5=0
х3=-5
Ответ: х1=1; х2=-1; х3=-5