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boroslik
@boroslik
June 2022
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Решите уравнения: а)(2х²-5х-7)(х-1)=0 б)x³-9x=0
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ГIOJLNHA
а)(2х²-5х-7)(х-1)=0
2х
²-5х-7=0
х-1=0
х=
х=-1
х=1
Ответ: х
₁=-1;х₂=1;х₃=
б)x³-9x=0
х(х
²-9)=0
х=0
х
²-9=0
х=0
х=3
х=-3
Ответ:х
₁=-3;х₂=0;х₃=3.
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Answers & Comments
2х²-5х-7=0
х-1=0
х=
х=-1
х=1
Ответ: х₁=-1;х₂=1;х₃=
б)x³-9x=0
х(х²-9)=0
х=0
х²-9=0
х=0
х=3
х=-3
Ответ:х₁=-3;х₂=0;х₃=3.