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lordshadov99qq
@lordshadov99qq
February 2023
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9. Розв'яжіть систему рівнянь: x-4y=2 1xy+2y=8 Частина 3
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nnonname571
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x=4y+2
1*(4y+2)y+2y=8
4y^2+4y=8
y^2+y=2
y^2+y-2=0
D=1+8=9
y=(-1+3)/2=1
y=(-1-3)/2=-2
x= 6
x= -6
В: (6; -1); (-6; -2)
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Answers & Comments
Verified answer
x=4y+21*(4y+2)y+2y=8
4y^2+4y=8
y^2+y=2
y^2+y-2=0
D=1+8=9
y=(-1+3)/2=1
y=(-1-3)/2=-2
x= 6
x= -6
В: (6; -1); (-6; -2)