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GrojinM
@GrojinM
August 2022
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Решите уравнение
120/(x+2)+10=80/x
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kseniya90
Вроде понятно написала
2 votes
Thanks 1
lonely44
Х≠-2
х≠0
120/(х+2)+10-80/х=0
120х+10х*(х+2)-80*(х+2)/х*(х+2)
120х+10х^2+20х-80х-160/х*(х+2)
60х+10х^2-160/х*(х+2)
60х+10х^2-160=0
делим на 10
6х+х^2-16=0
х^2+6х-16=0
х=-8
х=2
1 votes
Thanks 1
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Answers & Comments
х≠0
120/(х+2)+10-80/х=0
120х+10х*(х+2)-80*(х+2)/х*(х+2)
120х+10х^2+20х-80х-160/х*(х+2)
60х+10х^2-160/х*(х+2)
60х+10х^2-160=0
делим на 10
6х+х^2-16=0
х^2+6х-16=0
х=-8
х=2