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milena300
@milena300
August 2022
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помогите решить х3+9х=(8х) в квадрате -2х
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Armenia2780
Х³+9х=(8х)²-2х
х³-(8х)²+11х=0
х³-64х²+11х=0
х(х²-64х+11)=0
1)х=0
2)х²-64х+11=0
Д1=32²-11=1024-11=1013
х=32±√1013
ответ
0;32±√1013
0 votes
Thanks 1
milena300
спасибо
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Answers & Comments
х³-(8х)²+11х=0
х³-64х²+11х=0
х(х²-64х+11)=0
1)х=0
2)х²-64х+11=0
Д1=32²-11=1024-11=1013
х=32±√1013
ответ
0;32±√1013