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julia10es
@julia10es
July 2022
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Решите уравнение
2(x-1)+3x \ x-0,4 все это =x
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ТатМих
Verified answer
2х-2+3х/(х-0.4)=х
2х-х-2+3х/(х-0.4)=0
х+3х/(х-0.4)-2=0
х(х-0.4)+3х-2(х-0.4)=0
х²-0.4х+3х-2х+0.8=0
х²+0.6х+0.8=0 умножим на 5
5х²+3х+4=0
D=9-80=-79 <0 корней нет
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Verified answer
2х-2+3х/(х-0.4)=х2х-х-2+3х/(х-0.4)=0
х+3х/(х-0.4)-2=0
х(х-0.4)+3х-2(х-0.4)=0
х²-0.4х+3х-2х+0.8=0
х²+0.6х+0.8=0 умножим на 5
5х²+3х+4=0
D=9-80=-79 <0 корней нет