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Ответ

Ответ дан
girl5512

Ответ:

5х^2-20х+2х-8=0

5х^2-18х-8=0

D=(-18)^2-4×5×(-8)=484

x1=(18+22)÷10=4

x2=(18-22)÷10=-4/10

Ответ

Ответ дан
maryshangina09

Ответ:

(5х-4)×(х-4)=0

5х,+4=0

х-4=0

х=-4/5

х=4

Х1=-4/5, х2=4

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