rozwiąż układ równań x^2+y^2-14y+48=0 x+1=0
x^2+y^2-14y+48=0
x+1=0
x=-1
(-1)^2+y^2-14y+48=0
1+y^2-14y+48=0
y^2-14y+49=0
Δ=196-4*1*49=196- 196=0
y0=-b/2a=14/2=7
y=7
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x^2+y^2-14y+48=0
x+1=0
x=-1
(-1)^2+y^2-14y+48=0
1+y^2-14y+48=0
y^2-14y+49=0
Δ=196-4*1*49=196- 196=0
y0=-b/2a=14/2=7
x=-1
y=7