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Heltery
@Heltery
August 2022
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[tex] \left \{ {{x-4y=3} \atop {xy+2y=9}} \right. [/tex]
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lubovlubvasil
Из первого уравнения выражаем х, х=4у+3, подставляем во второе (4у+3)у+2у=9
4у^2+5y-9=0
D=169, y=1, y= -
x=7 x=-6
ответ: (7,1) (- 6, -
)
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Answers & Comments
4у^2+5y-9=0
D=169, y=1, y= -
x=7 x=-6
ответ: (7,1) (- 6, - )