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12n^2+12n+3=0
a = 12; b = 12; c = +3;
Δ = b2-4ac
Δ = 122-4·12·3
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$n=\frac{-b}{2a}=\frac{-12}{24}=-1/2$
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