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renatiko
@renatiko
July 2021
1
19
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Решите уравнение:21,22 (а,б)
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erikosik
Х2-14х+24=0
(х2-14х)+24=0
х(х-14)+24=0
(х+24)(х-14)=0
х-24=0 или х-14=0
х1=24 х2=14
Ответ:х1=24;х2=14
б)
-х2+17х+45=0
-х(х-17)+45=0
(х-17)(45-х)=0
х-17=0 или 45-х=0
х1=17 х2=45
ответ:х1=17; х2=45
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Answers & Comments
(х2-14х)+24=0
х(х-14)+24=0
(х+24)(х-14)=0
х-24=0 или х-14=0
х1=24 х2=14
Ответ:х1=24;х2=14
б)
-х2+17х+45=0
-х(х-17)+45=0
(х-17)(45-х)=0
х-17=0 или 45-х=0
х1=17 х2=45
ответ:х1=17; х2=45