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gueast1234547854
@gueast1234547854
July 2022
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система уравнения...
-x-5y+14=0
5y^2-41=-4x
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Felicite
Из первой строчки: х=14-5у
подставляем во вторую: 5у^2-41=-4(14-5y)
5y^2-41=-56+20y
5y^2-20y+15=0
делим на 5: y^2-4y+3=0
y1=1
y2=3
x1=14-5*1=9
x2=14-5*3=-1
1 votes
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gueast1234547854
большое спасибо!)
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Answers & Comments
подставляем во вторую: 5у^2-41=-4(14-5y)
5y^2-41=-56+20y
5y^2-20y+15=0
делим на 5: y^2-4y+3=0
y1=1
y2=3
x1=14-5*1=9
x2=14-5*3=-1