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Vlad0058
@Vlad0058
April 2021
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Darina002
X=35-5y
8x^2+5xy=0
x=35-5y
8(35-5y)^2+5y(35-5y)=0
x=35-5y
175y^2-2625y+9800=0
x=35-5y
y^2-15y+56=0
D=(-15)^2-4*1*56=1
y1=15+1\2=8
y2=15-1\2=7
x1=35-5*8= -5
y1=8
или
x2=35-5*7=0
y2=7
Ответ: x1=-5;x2=0;y1=8;
y2=7
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Answers & Comments
8x^2+5xy=0
x=35-5y
8(35-5y)^2+5y(35-5y)=0
x=35-5y
175y^2-2625y+9800=0
x=35-5y
y^2-15y+56=0
D=(-15)^2-4*1*56=1
y1=15+1\2=8
y2=15-1\2=7
x1=35-5*8= -5
y1=8
или
x2=35-5*7=0
y2=7
Ответ: x1=-5;x2=0;y1=8;y2=7