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486+108x+6x^2=0
a = 6; b = 108; c = +486;
Δ = b2-4ac
Δ = 1082-4·6·486
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{-108}{12}=-9$
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