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minakorei
@minakorei
August 2022
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Решите уравнение (21 задание)
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bella8767
Х3+2х2-х-2=0
(х3-х) +(2х2-2)=0
х(х2-1)+2(х2-1)=0
(х+2)(х2-1)=0
х+2=0 : (х2-1)
х+2=0
х= -2
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Answers & Comments
(х3-х) +(2х2-2)=0
х(х2-1)+2(х2-1)=0
(х+2)(х2-1)=0
х+2=0 : (х2-1)
х+2=0
х= -2